1. Columbia Chiropractic Clinic, Hermiston, OR.
2. Holistic Dental Center, Spokane, WA.
3. Fogarty Naturopathic Offices, Bellevue, WA.
4. Pathways Naturopathic Clinic, Oakville, ON, Canada.
5. The William A. Tiller Foundation for New Science, Payson, AZ.
6. National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD.
7. Department of Human Physiology and Pharmacology, University of Rome “La Sapienza,” Rome, Italy.