1. Department of Allergology and Occupational Dermatology; Dermatologikum Hamburg; Hamburg Germany
2. Department of Internal Medicine VI/Psychosomatic Medicine and Psychotherapy; University Hospital Tübingen; Tübingen Germany
3. Department of Psychosomatic Medicine and Psychotherapy; Hannover Medical School; Hannover Germany
4. Department of Dermatology and Allergy; Hannover Medical School; Hannover Germany
5. Institute for Innovative Rehabilitation, Hospital Management and Distress Medicine (IREHA); Lielje Group; Löhne Germany
6. Department of Psychosomatic Medicine; Berolina Clinic; Löhne Germany