1. Depression Research Unit; Department of Psychiatry, University of Pennsylvania School of Medicine; Philadelphia PA
2. Myrna Brind Center of Integrative Medicine; Thomas Jefferson University; Philadelphia PA
3. Department of Emergency Medicine and Radiology; Thomas Jefferson University; Philadelphia PA
4. Center for Cognitive Therapy; Perelman School of Medicine at the University of Pennsylvania
5. Center for Clinical Epidemiology & Bio-statistics; University of Pennsylvania School of Medicine; Philadelphia PA