1. Institute of Social Medicine, Occupational Health and Public Health, Medical Faculty, University of Leipzig, Leipzig, Germany
2. Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany
3. Department of Psychiatry, University of Bonn and German Center For Neurodegenerative Diseases Within the Helmholtz Association, Bonn, Germany
4. Institute of Primary Medical Care, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Institute For General Practice, Working Group Medical Statistics and IT-Infrastructure, Hannover Medical School, Hannover, Germany
6. Department of Health Economics and Health Services Research, Hamburg Center For Health Economics, University Medical Centre Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany