1 Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany; Department of Gynecology and Obstetrics, HELIOS Kliniken GmbH, Rottweil, Germany.
2 VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA; Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, Digestive Diseases Research Center (DDRC), Center for Neurobiology of Stress and Resilience (CNSR), University of California Los Angeles, Los Angeles, CA, USA.
3 Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany; Charite - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany; Charité Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany. Electronic address: andreas.stengel@med.uni-tuebingen.de.