1. Department of Psychological and Brain Sciences, Boston University, Boston, Massachusetts.
2. Fairhaven College of Interdisciplinary Studies, Western Washington University, Bellingham, Washington.
3. Behavioral Medicine Service, Massachusetts General Hospital, Boston, Massachusetts.
4. Cook County Health and Hospitals System, Hektoen Institute of Medicine, Chicago, Illinois.
5. Department of Medicine, Stroger Hospital, Cook County Health & Hospitals System, and Rush University, Chicago, Illinois.