1. Institute for Community Medicine, Section Epidemiology of Healthcare & Community Health, University Medicine Greifswald, Ellernholzstr. 1–2, 17489, Greifswald, Germany
2. Department of Health & Prevention, Ernst-Moritz-Arndt-University of Greifswald, Robert-Blum-Str. 13, 17487 Greifswald, Germany