1. Center for Neurobiology of Stress, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
2. Department of Medicine and Physiology (Division of Digestive Diseases), David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
3. Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
4. Brain Research Institute, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
5. Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California
6. Department of Urology, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California