1. Clinic for Forensic Psychiatry, District Hospital Ansbach, Ansbach, Germany
2. Outpatient Clinic for Behavioral Addictions, Department of Psychosomatic Medicine and Psychotherapy, University Medical Centre Mainz, Mainz, Germany
3. Institut für Kognitive Verhaltenstherapie Hessen [Institute for Cognitive Behavioral Therapy] (IKVT) Ltd., Wiesbaden, Germany