1. Institute of Psychology, Alpen-Adria-University of Klagenfurt, Klagenfurt, Austria.
2. Center for Endometriosis Stage III, Villach General Hospital, Villach, Austria.
3. Stiftung Endometrioseforschung, Westerstede, Germany.
4. Endometriosis and Pelvic Pain Clinic, Department of Obstetrics & Gynaecology, Wilhelminen Hospital, Vienna, Austria.