[1] University Medicine Greifswald,Department of General Practice, Institute for Community Medicine
[2] University Medicine Greifswald,Department of Internal Medicine A, Nephrology Dialysis and Hypertension
[3] Brandenburg University of Technology Cottbus-Senftenberg,Department of Public Health
[4] Pulmonology and General Internal Medicine,Department II – Cardiology, Clinic for Internal Medicine
[5] DRK-Krankenhaus Teterow,Faculty of Applied Health Sciences
[6] European University of Applied Sciences,undefined