1. Dr. Savill and Dr. Loewy are with the Weill Institute for Neurosciences, University of California, San Francisco. Ms. Skymba, Dr. Ragland, Dr. Niendam, Dr. Lesh, and Dr. Carter are with the Department of Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento. Dr. Goldman is with the University of Maryland School of Medicine, Baltimore.