1. American Environmental Health Studies Project; Lexington MA USA
2. Faculty of Medicine; University of Calgary; Calgary AB Canada
3. Faculty of Dentistry; University of Toronto; Toronto ON Canada
4. Department of Biology; University of Toronto Mississauga; Mississauga ON Canada
5. Fluoride Action Network; Los Angeles CA USA
6. Smiles of Bellevue, Private Dental Practice; Bellevue WA USA
7. Biochemical Institute; University of Texas at Austin; Austin TX USA