1. Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle, Washington.
2. Department of Public Health, Health Sciences Center, University of Guadalajara.
3. Tribhuvan University, Kathmandu, Nepal.
4. Evergreen Center for Homeopathic Medicine, Edmonds, Washington.
5. Albuquerque, New Mexico.
6. Department of Family Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland.