Research ExplorerScientific StaffIngmar Schäfer Publications

Ingmar Schäfer

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Publications

  1. 2024

  2. Impact of two COVID-19 lockdowns on HbA1c levels in patients with type 2 diabetes and associations with patient characteristics: a multicentre, observational cohort study over three years

    Schäfer, I., Tajdar, D., Walther, L., Bittner, L., Lühmann, D. & Scherer, M., 05.01.2024, In: FRONT PUBLIC HEALTH. 11, p. 1272769

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  3. 2023

  4. Compliance and patient satisfaction with treatment settings recommended by the medical on-call service 116117 in Germany using computer-assisted structured initial assessment: a cross-sectional observational study accompanying the demand intervention

    Schäfer, I., Menzel, A., Herrmann, T., Willms, G., Oltrogge, J. H., Lühmann, D. & Scherer, M., 09.05.2023, In: BMJ OPEN. 13, 5, p. e070475

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  5. Association between patient-related factors and avoided consultations due to fear of COVID-19 during the first lockdown in northern Germany: Results of a cross-sectional observational study

    Hansen, H., Schäfer, I., Dröge, F., Menzel, A., Tajdar, D., Mayer-Runge, U., Lühmann, D. & Scherer, M., 05.2023, In: Z EVIDENZ FORTBILD Q. 178, p. 75-81 7 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  6. Validation of patient- and GP-reported core sets of quality indicators for older adults with multimorbidity in primary care: results of the cross-sectional observational MULTIqual validation study

    Schäfer, I., Schulze, J., Glassen, K., Breckner, A., Hansen, H., Rakebrandt, A., Berg, J., Blozik, E., Szecsenyi, J., Lühmann, D. & Scherer, M., 17.04.2023, In: BMC MED. 21, 1, p. 148

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  7. Expectations and Prior Experiences Associated With Adverse Effects of COVID-19 Vaccination

    Schäfer, I., Oltrogge, J. H., Nestoriuc, Y., Warren, C. V., Brassen, S., Blattner, M., Lühmann, D., Tinnermann, A., Scherer, M. & Büchel, C., 27.03.2023, In: JAMA NETW OPEN. 6, 3, p. e234732

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  8. 2022

  9. Gesundheitskompetenz und Hausarztbindung nicht dringlicher Patientinnen und Patienten in Notaufnahmen: Ergebnisse der PiNo-Studie in Hamburg und Schleswig-Holstein

    Strauß, A., Zimmermann, T., Schäfer, I. & Scherer, M., 12.2022, In: Z EVIDENZ FORTBILD Q. 175, p. 50-58 9 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  10. Measuring the quality of care for older adults with multimorbidity: Results of the MULTIqual project

    Schulze, J., Glassen, K., Pohontsch, N. J., Blozik, E., Eißing, T., Breckner, A., Höflich, C., Rakebrandt, A., Schäfer, I., Szecsenyi, J., Scherer, M. & Lühmann, D., 07.09.2022, In: GERONTOLOGIST. 62, 8, p. 1135-1146 12 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  11. Patient satisfaction with computer-assisted structured initial assessment facilitating patient streaming to emergency departments and primary care practices: results from a cross-sectional observational study accompanying the DEMAND intervention in Germany

    Schäfer, I., Menzel, A., Herrmann, T., Oltrogge, J. H., Lühmann, D. & Scherer, M., 23.08.2022, In: BMC Primary Care. 23, 1, 213.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  12. Experiences of patients with multimorbidity with primary care and the association with patient activation: a cross-sectional study in Germany

    Breckner, A., Glassen, K., Schulze, J., Lühmann, D., Schäfer, I., Szecsenyi, J., Scherer, M. & Wensing, M., 08.08.2022, In: BMJ OPEN. 12, 8, p. e059100 e059100.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  13. Effectiveness of a specialist palliative home care nurse–patient consultation followed by an interprofessional telephone case conference compared with usual care among patients with non-oncological palliative care needs: protocol for the multicentre KOPAL cluster-randomised controlled trial

    Marx, G., Mallon, T., Pohontsch, N. J., Schade, F., Dams, J., Zimansky, M., Asendorf, T., Böttcher, S., Mueller, C. A., Freitag, M., Hummers, E., Bussche, H. V. D., Schäfer, I., König, H-H., Stiel, S., Schneider, N., Nauck, F., Friede, T. & Scherer, M., 25.07.2022, In: BMJ OPEN. 12, 7, p. e059440 e059440.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  14. Predictors of change in depressive symptoms in older and multimorbid patients: a longitudinal analysis of the multicare cohort

    Wicke, F. S., Dinh, T. S., Riedel-Heller, S., Weyerer, S., König, H-H., Gensichen, J., Schön, G., Wegscheider, K., Bickel, H., Fuchs, A., Schäfer, I., van den Bussche, H., Scherer, M., Mergenthal, K. & MultiCare Study Group, 04.2022, In: AGING MENT HEALTH. 26, 4, p. 818-827 10 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  15. The moderating effects of social support and depressive symptoms on pain among elderly multimorbid patients-data from the multicentre, prospective, observational cohort study MultiCare

    Mallon, T., Schäfer, I., Fuchs, A., Gensichen, J., Maier, W., Riedel-Heller, S., König, H-H., Mergenthal, K., Schön, G., Wegscheider, K., Weyerer, S., Wiese, B., van den Bussche, H. & Scherer, M., 04.2022, In: AGING MENT HEALTH. 26, 4, p. 803-809 7 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  16. Intended health care utilisation in cases of severe COVID-19 and inflammatory gastrointestinal disease – results of a population survey with vignettes

    Klein, J., Strauß, A., Koens, S., Schäfer, I. & von dem Knesebeck, O., 31.03.2022, In: BMJ OPEN. 12, 3, p. e057644 e057644.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  17. Public perceptions of urgency of severe cases of COVID-19 and inflammatory gastrointestinal disease

    Koens, S., Strauß, A., Klein, J., Schäfer, I. & von dem Knesebeck, O., 2022, In: PLOS ONE. 17, 8, p. e0273000 e0273000.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  18. The Link Between Health Literacy and Three Conditions of Metabolic Syndrome: Obesity, Diabetes and Hypertension

    Tajdar, D., Schäfer, I., Lühmann, D., Fertmann, R., Steinberg, T., Bussche van den, H. & Scherer, M., 2022, In: DIABET METAB SYND OB. 15, 15, p. 1639-1650 12 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  19. 2021

  20. Non-random relations in drug use expressed as patterns comprising prescription and over-the-counter drugs in multimorbid elderly patients in primary care: Data of the exploratory analysis of the multicentre, observational cohort study MultiCare

    Krüger, C., Schäfer, I., Bussche van den, H., Baehr, M., Bickel, H., Fuchs, A., Gensichen, J., Maier, W., Riedel-Heller, S. G., König, H-H., Dahlhaus, A., Schön, G., Weyerer, S., Wiese, B., von Renteln-Kruse, W., Langebrake, C. & Scherer, M., 12.2021, In: EUR J GEN PRACT. 27, 1, p. 119-129 11 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  21. Is subjectively perceived treatment urgency of patients in emergency departments associated with self-reported health literacy and the willingness to use the GP as coordinator of treatment? Results from the multicentre, cross-sectional, observational study PiNo Bund

    Schäfer, I., Menzel, A., Oltrogge, J. H., Slagman, A., Möckel, M., Lühmann, D. & Scherer, M., 24.11.2021, In: BMJ OPEN. 11, 11, p. e053110

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  22. Comparison of FORTA, PRISCUS and EU(7)-PIM lists on identifying potentially inappropriate medication and its impact on cognitive function in multimorbid elderly German people in primary care: a multicentre observational study

    Krüger, C., Schäfer, I., van den Bussche, H., Bickel, H., Dreischulte, T., Fuchs, A., König, H-H., Maier, W., Mergenthal, K., Riedel-Heller, S. G., Schön, G., Weyerer, S., Wiese, B., von Renteln-Kruse, W., Langebrake, C. & Scherer, M., 17.09.2021, In: BMJ OPEN. 11, p. e050344

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  23. The effect of COVID-19 pandemic and lockdown on consultation numbers, consultation reasons and performed services in primary care: results of a longitudinal observational study

    Schäfer, I., Hansen, H., Menzel, A., Eisele, M., Tajdar, D., Lühmann, D. & Scherer, M., 23.06.2021, In: BMC FAM PRACT. 22, 1, p. 125

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  24. Anticholinergic drug burden according to the anticholinergic drug scale and the German anticholinergic burden and their impact on cognitive function in multimorbid elderly German people: a multicentre observational study

    Krüger, C., Schäfer, I., van den Bussche, H., Bickel, H., Fuchs, A., Gensichen, J., König, H-H., Maier, W., Mergenthal, K., Riedel-Heller, S. G., Schön, G., Weyerer, S., Wiese, B., von Renteln-Kruse, W., Langebrake, C. & Scherer, M., 23.03.2021, In: BMJ OPEN. 11, e044230.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  25. Low health literacy is associated with higher risk of type 2 diabetes: a cross-sectional study in Germany

    Tajdar, D., Lühmann, D., Fertmann, R., Steinberg, T., van den Bussche, H., Scherer, M. & Schäfer, I., 16.03.2021, In: BMC PUBLIC HEALTH. 21, 1, p. 510

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  26. Public knowledge about emergency care – results of a population survey from Germany

    von dem Knesebeck, O., Koens, S., Schäfer, I., Strauß, A. & Klein, J., 2021, In: FRONT PUBLIC HEALTH. 9, p. 787921 787921.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  27. 2020

  28. Regional differences in the patient population of general practices in northern Germany: results of a mixed-methods study

    Hansen, H., Schäfer, I., Pohontsch, N. J., Kazek, A., Hardt, H., Lühmann, D. & Scherer, M., 27.11.2020, In: BMJ OPEN. 10, 11, p. e041762

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  29. Referrals to secondary care in an outpatient primary care walk-in clinic for refugees in Germany: results from a secondary data analysis based on electronic medical records

    Schäfer, I., Oltrogge-Abiry, J. H., Pruskil, S., Mews, C., Schlichting, D., Jahnke, M., Wagner, H-O., Lühmann, D. & Scherer, M., 22.10.2020, In: BMJ OPEN. 10, 10, p. e035625

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  30. Episodes of care in a primary care walk-in clinic at a refugee camp in Germany – a retrospective data analysis

    Oltrogge-Abiry, J. H., Schäfer, I., Schlichting, D., Jahnke, M., Rakebrandt, A., Pruskil, S., Wagner, H-O., Lühmann, D. & Scherer, M., 21.09.2020, In: BMC FAM PRACT. 21, 1, p. 193 21.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  31. Regional and patient-related factors influencing the willingness to use general practitioners as coordinators of the treatment in northern Germany - results of a cross-sectional observational study

    Hansen, H., Schäfer, I., Porzelt, S., Kazek, A., Lühmann, D. & Scherer, M., 17.06.2020, In: BMC FAM PRACT. 21, 1, p. 110

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  32. Regional differences in reasons for consultation and general practitioners' spectrum of services in northern Germany - results of a cross-sectional observational study

    Schäfer, I., Hansen, H., Ruppel, T., Lühmann, D., Wagner, H-O., Kazek, A. & Scherer, M., 31.01.2020, In: BMC FAM PRACT. 21, 1, p. 22

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  33. 2019

  34. A novel superior medication-based chronic disease score predicted all-cause mortality in independent geriatric cohorts

    Quinzler, R., Freitag, M. H., Wiese, B., Beyer, M., Brenner, H., Dahlhaus, A., Döring, A., Freund, T., Heier, M., Knopf, H., Luppa, M., Prokein, J., Riedel-Heller, S., Schäfer, I., Scheidt-Nave, C., Scherer, M., Schöttker, B., Szecsenyi, J., Thürmann, P., van den Bussche, H., Gensichen, J. & Haefeli, W. E., 01.2019, In: J CLIN EPIDEMIOL. 105, p. 112-124 13 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  35. Chronisch Kranke in deutschen Notaufnahmen: Querschnittsanalysen zu Konsultationsanlässen, Gründen für die Inanspruchnahme und Entlassungsdiagnosen

    Muche-Borowski, C., Boczor, S., Schäfer, I., Kazek, A., Hansen, H., Oltrogge, J. H., Giese, S., Lühmann, D. & Scherer, M., 2019, In: BUNDESGESUNDHEITSBLA. 62, p. 1103-1112

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  36. Health behaviour, social support, socio-economic status and the 5-year progression of multimorbidity: Results from the MultiCare Cohort Study

    Schäfer, I., Hansen, H., Kaduszkiewicz, H., Bickel, H., Fuchs, A., Gensichen, J., Maier, W., Riedel-Heller, S. G., König, H-H., Dahlhaus, A., Schön, G., Weyerer, S., Wiese, B., Bussche van den, H. & Scherer, M., 2019, In: Journal of comorbidity. 2019, 9, p. 1-11 9.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  37. Messung der Akzeptanz von Gesundheitszielen in der Bevölkerung: Testung eines Befragungsbasierten Evaluationskonzepts

    Schäfer, I., Stark, A., Lühmann, D. & Scherer, M., 2019, Dienstleistungen und Gesundheit in Regionen: Aspekte vernetzter Wertschöpfung. Ganz, W., Eymann, T., Schäfer-Walkmann, S., Hockauf, H. & Scherer, M. (eds.). 1 ed. Stuttgart: Fraunhofer-Verlag, Vol. 1. p. 176-199 24 p.

    Research output: SCORING: Contribution to book/anthology › SCORING: Contribution to collected editions/anthologies › Research › peer-review

  38. Systematische Bestandsaufnahme der Zielsetzungen gesundheitsbezogener Maßnahmen als Grundlage für die Effektivitätsmessung: Vorstellung des methodischen Vorgehens am Beispiel der Gesundheits- und Dienstleistungsregion Chemnitz

    Schäfer, I., Stark, A., A, B., Meyer, S., Lühmann, D. & Scherer, M., 2019, Dienstleistungen und Gesundheit in Regionen: Aspekte vernetzter Wertschöpfung. Ganz, W., Eymann, T., Schäfer-Walkmann, S., Hockauf, H. & Scherer, M. (eds.). 1 ed. Stuttgart: Fraunhofer-Verlag, Vol. 1. p. 164-175 12 p.

    Research output: SCORING: Contribution to book/anthology › SCORING: Contribution to collected editions/anthologies › Research › peer-review

  39. 2018

  40. Multimorbidity patterns and 5-year overall mortality - Results from a claims data-based observational study

    Schäfer, I., Kaduszkiewicz, H., Nguyen, T. S., van den Bussche, H., Scherer, M. & Schön, G., 19.12.2018, In: J Comorbidity. 8, 1, p. 2235042X18816588

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  41. Cross-cultural validation of the German version of the Four-Dimensional Symptom Questionnaire (4DSQ) in multimorbid elderly people

    Exner, A., Kleinstäuber, M., Maier, W., Fuchs, A., Petersen, J. J., Schäfer, I., Gensichen, J., Riedel-Heller, S. G., Weyerer, S., Bickel, H., König, H-H., Wiese, B., Schön, G., Scherer, M., van den Bussche, H. & Terluin, B., 10.2018, In: QUAL LIFE RES. 27, 10, p. 2691-2697 7 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  42. General practitioners' perception of being a doctor in urban vs. rural regions in Germany - A focus group study

    Pohontsch, N. J., Hansen, H., Schäfer, I. & Scherer, M., 27.03.2018, In: FAM PRACT. 35, 2, p. 209-215 7 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  43. Narrative medicine-based intervention in primary care to reduce polypharmacy: results from the cluster-randomised controlled trial MultiCare AGENDA

    Schäfer, I., Kaduszkiewicz, H., Mellert, C., Löffler, C., Mortsiefer, A., Ernst, A., Stolzenbach, C-O., Wiese, B., Abholz, H-H., Scherer, M., van den Bussche, H. & Altiner, A., 23.01.2018, In: BMJ OPEN. 8, 1, p. e017653

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  44. Antwort auf einen Leserbrief zum Artikel: Patients attending emergency departments—a cross-sectional study of subjectively perceived treatment urgency and motivation for attending.

    Schäfer, I., Scherer, M. & Lühmann, D., 2018, In: Deutsches Ärzteblatt. 115, 5, p. 66-67

    Research output: SCORING: Contribution to journal › Other (editorial matter etc.) › Research

  45. Gesundheitsziele verorten, formulieren und messbar machen: Manual zur INDiGeR-Onlinehilfe

    Schäfer, I., Stark, A., Lühmann, D., Schletz, A. & Scherer, M., 2018, 1 ed. Hamburg: Fraunhofer IAO. 27 p.

    Research output: Book/anthology › Monographs › Research › peer-review

  46. 2017

  47. Patients attending emergency departments— a cross-sectional study of subjectively perceived treatment urgency and motivation for attending.

    Scherer, M., Lühmann, D., Kazek, A., Hansen, H. & Schäfer, I., 29.09.2017, In: DTSCH ARZTEBL INT. 114, 39, p. 645-652 8 p.

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  48. Satisfaction with general practice care in German patients with multimorbidity: a cross-sectional study

    Mortsiefer, A., Altiner, A., Ernst, A., Kadusziewicz, H., Krahe, A., Mellert, C., Schäfer, I., Stolzenbach, C-O., Wiese, B. & Löffler, C., 01.08.2017, In: FAM PRACT. 34, 4, p. 452-458

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  49. Development of a meta-algorithm for guiding primary care encounters for patients with multimorbidity using evidence-based and case-based guideline development methodology

    Muche-Borowski, C., Lühmann, D., Schäfer, I., Mundt, R., Wagner, H-O., Scherer, M. & Guideline Group of the German College of General Practice and Family Medicine (DEGAM), 22.06.2017, In: BMJ OPEN. 7, 6, p. e015478

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  50. Regional variations of perceived problems in ambulatory care from the perspective of general practitioners and their patients - an exploratory focus group study in urban and rural regions of northern Germany

    Hansen, H., Pohontsch, N. J., Bole, L., Schäfer, I. & Scherer, M., 25.05.2017, In: BMC FAM PRACT. 18, 1, p. 68

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  51. 2016

  52. Regional variation of patient behaviour and reasons for consultation in the general practice of Northern Germany: protocol for an observational study

    Schäfer, I., Hansen, H., Pohontsch, N. J., Bole, L., Wagner, H-O., Führ, M., Lühmann, D. & Scherer, M., 29.06.2016, In: BMJ OPEN. 6, 6, p. e010738

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  53. Overutilization of ambulatory medical care in the elderly German population? - An empirical study based on national insurance claims data and a review of foreign studies

    Bussche van den, H., Kaduszkiewicz, H., Schäfer, I., Koller, D., Hansen, H., Scherer, M. & Schön, G., 14.04.2016, In: BMC HEALTH SERV RES. 16, 1, p. 129

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  54. Association between multimorbidity patterns and chronic pain in elderly primary care patients: a cross-sectional observational study

    Scherer, M., Hansen, H., Gensichen, J., Mergenthal, K., Riedel-Heller, S., Weyerer, S., Maier, W., Fuchs, A., Bickel, H., Schön, G., Wiese, B., König, H-H., Bussche van den, H. & Schäfer, I., 2016, In: BMC FAM PRACT. 17, 1, p. 68

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  55. 2015

  56. Social inequalities in patient-reported outcomes among older multimorbid patients - results of the MultiCare cohort study

    von dem Knesebeck, O., Bickel, H., Fuchs, A., Gensichen, J., Höfels, S., Riedel-Heller, S. G., König, H-H., Mergenthal, K., Schön, G., Wegscheider, K., Weyerer, S., Wiese, B., Scherer, M., van den Bussche, H. & Schäfer, I., 07.02.2015, In: INT J EQUITY HEALTH. 14, p. Art. 17

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  57. Reasons for disagreement regarding illnesses between older patients with multimorbidity and their GPs - a qualitative study

    Hansen, H., Pohontsch, N., Bussche van den, H., Scherer, M. & Schäfer, I., 01.01.2015, In: BMC FAM PRACT. 16, 1, p. 68

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  58. Self-efficacy in multimorbid elderly patients with osteoarthritis in primary care-influence on pain-related disability

    Schulz, S., Brenk-Franz, K., Kratz, A., Petersen, J. J., Riedel-Heller, S. G., Schäfer, I., Weyerer, S., Wiese, B., Fuchs, A., Maier, W., Bickel, H., König, H-H., Scherer, M., van den Bussche, H., Gensichen, J. & MultiCare Study Group, 2015, In: CLIN RHEUMATOL. 34, 10, p. 1761-1767

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  59. Zusammenhang von sozialem Status und Multimorbidität

    von dem Knesebeck, O., Scherer, M., Bussche van den, H. & Schäfer, I., 2015, In: Hamb Ärztebl. 69, 6, p. 12-15

    Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

  60. 2014

  61. Soziale Ungleichheit von Multimorbidität im höheren Lebensalter

    Schäfer, I., 22.09.2014, 189 p.

    Research output: Book/anthology › Dissertations › Research

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