1. Division of Digestive Diseases; Department of Medicine; The Gail and Gerald Oppenheimer Family Center for Neurobiology of Stress; David Geffen School of Medicine at UCLA; Los Angeles; CA; USA
2. Ersta Hospital; Karolinska Institute; Stockholm; Sweden
3. Department of Psychiatry; The Gail and Gerald Oppenheimer Family Center for Neurobiology of Stress; David Geffen School of Medicine at UCLA; Los Angeles; CA; USA
4. Department of Medical and Health Sciences (IMH)/Radiology; Center for Medical Image Science and Visualization (CMIV); Linköping University; Linköping; Sweden
5. Department of Clinical and Experimental Medicine/Gastroenterology; Center for Medical Image Science and Visualization (CMIV); Linköping University; Linköping; Sweden