Affiliation: | 1.Department of Medical Psychology and Medical Sociology, Faculty of Medicine,Ruhr-University of Bochum,Bochum,Germany;2.Department of General Medicine, Faculty of Medicine,University of Freiburg,Freiburg,Germany;3.Department of General Medicine, Faculty of Medicine,Ruhr-University of Bochum,Bochum,Germany;4.Department of Orthopedics,Elisabeth Hospital, Ruhr-University of Bochum,Bochum,Germany |