[1] University Medical Center Hamburg-Eppendorf,Department of Health Economics and Health Services Research, Hamburg Center for Health Economics
[2] Justus-Liebig-University of Giessen,Clinic of Psychosomatic Medicine and Psychotherapy
[3] University Medicine,Clinic of Psychosomatic Medicine and Psychotherapy, Georg
[4] University Medical Center,August
[5] Johannes Gutenberg University Mainz,University of Göttingen
[6] LWL-University Clinic Bochum,Clinic and Policlinic for Psychosomatic Medicine and Psychotherapy
[7] Ruhr University Bochum,Department of Psychosomatic Medicine and Psychotherapy
[8] Johannes Gutenberg University Mainz,Department of Clinical Psychology and Psychotherapy
[9] Technical University Dresden,Institute of Clinical Psychology and Psychotherapy
[10] Technical University Dresden,Clinic of Psychotherapy and Psychosomatic Medicine
[11] Goethe University Frankfurt,Department of Clinical Psychology and Psychotherapy
[12] Jena University Hospital,Institute of Psychosocial Medicine and Psychotherapy
[13] Ruhr-University Bochum,Department of Clinical psychology and psychotherapy