1. Research Institute of the Diabetes Academy Mergentheim (FIDAM), Bad Mergentheim, Germany.
2. Department of Clinical Psychology and Psychotherapy, Otto-Friedrich-University of Bamberg, Bamberg, Germany.
3. Health Psychology, Institute of Psychology Johannes Gutenberg-University Mainz, Mainz, Germany.
4. Diabetes Clinic Mergentheim, Bad Mergentheim, Germany.