1. Department of Preventive and Restorative Dental Sciences; School of Dentistry; University of California; San Francisco
2. School of Dentistry; University of California; San Francisco
3. School of Dentistry; University of Chennai; Republic of India
4. Department of Health Science; Kanagawa Dental Collage; Yokosuka Japan
5. Preventive Dentistry; Hiroshima University Hospital; Japan
6. International Dentist Program; School of Dentistry; University of California; San Francisco