has been director of the Institute for Medical Sociology, Health Services Research and Rehabilitation Science (IMVR) at the University of Cologne since 2009, a bridge institute and joint institution between the Faculty of Human Sciences and the Faculty of Medicine. Since 2009 he has also held the bridging professorship “Quality Development and Evaluation in Rehabilitation”, which is responsible for the teaching areas of “Medical Sociology” (Faculty of Medicine) and “Quality Development in Rehabilitation” (Faculty of Human Sciences).