1. Department of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany
2. Rehabilitation Clinic Bad Oexen, Bad Oeynhausen, Germany
3. Department of Psychology, Universidad de los Andes, Bogotá, Colombia
4. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
5. Department of Applied Human Studies, University of Applied Sciences Magdeburg-Stendal, Stendal, Germany
6. Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Leipzig, Germany
7. Department of Educational and Counselling Psychology, McGill University, Montréal, Canada