1. Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts.
2. Department of Family Medicine, Boston University School of Medicine, Boston, Massachusetts.
3. Medicinal Plant Program, Department of Plant, Soil, and Insect Sciences, University of Massachusetts, Amherst, Massachusetts.
4. Toronto Western Hospital, Toronto, Ontario, Canada.
5. Arizona Center for Integrative Medicine, University of Arizona Health Sciences, Tucson, Arizona.