1. Department of Psychology; University of Fribourg; Rue P.-a. De Faucigny 2 Fribourg Switzerland
2. Integrated Research and Treatment Center AdiposityDiseases; University of Leipzig, Medical Center; Philipp-Rosenthal-Strasse 27 Leipzig Germany
3. Department of Medical Psychology and Medical Sociology; University of Leipzig, Medical Center; Leipzig Germany
4. Institute for Health and Behavior; Research Unit inside, University of Luxembourg, Campus Walferdange; Esch-sur-Alzette Luxemburg