1. WesternU College of Dental Medicine; Pomona CA USA
2. General Practice; Ontario, CA USA
3. Osaka University Graduate School of Dentistry; Osaka Japan
4. Tokyo Dental College Department of Oral Health & Clinical Science Division of Sports Dentistry; Tokyo Japan
5. Kyung Hee University School of Dentistry; Seoul South Korea
6. Faculty of Dentistry; Sydney University; Sydney Australia
7. Meikai University School of Dentistry; Saitama Japan
8. Nihon University School of Dentistry at Matsudo; Chiba Japan
9. Nihon University School of Dentistry; Tokyo Japan
10. Tokyo Medical and Dental University; Tokyo Japan
11. General Practice; Honolulu HI USA