1. Department of Psychology, Goethe-University Frankfurt, Frankfurt am Main, Germany
2. Institut für Psychotherapie in Mainz (ipsti-mz), Mainz, Germany
3. Center for Student Counseling, Johannes Gutenberg University Mainz, Mainz, Germany
4. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany