1. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
2. Department of Nursing Science, Diagnostics in Healthcare & E-Health, University Trier, Trier, Germany
3. Department of Psychology, Goethe University Frankfurt, Frankfurt am Main, Germany
4. Research and Treatment Center Adiposity Diseases, Behavioral Medicine Unit, Department of Psychosomatic Medicine and Psychotherapy, Leipzig University Medical Center, Leipzig, Germany;
5. Department of Psychology, Ben-Gurion University of the Negev, Beer-Sheva, Israel