1. Department of Medical Psychology and Medical Sociology; University Medical Center Leipzig; Leipzig Germany
2. Medical Clinic II, Hospital St. Elisabeth and St. Barbara Halle Saale; Halle Saale Germany
3. Faculty of Managerial and Cultural Studies; University of Applied Sciences Zittau/Goerlitz; Zittau/Goerlitz Germany
4. Integrated Research and Treatment Center (IFB) Adiposity Diseases-Behavioral Medicine, Department of Medical Psychology and Medical Sociology; University Medical Center; Leipzig Germany