1. University of Leipzig; Department of Medical Psychology and Medical Sociology; Philipp-Rosenthal-Str. 55 04103 Leipzig Germany
2. Leipzig University Medical Center; Integrated Research and Treatment Center Adiposity Diseases, Medical Psychology and Medical Sociology; Philipp-Rosenthal-Str. 27 04103 Leipzig Germany
3. Rehabilitation Clinic for Children with their Families, Youngsters and Young Adults; Oberkatzensteig 11 78141 Schönwald im Schwarzwald Germany