1. Department of Dentistry, School of Dentistry National Yang Ming Chiao Tung University Taipei Taiwan
2. Association of Family Dentistry Taipei Taiwan
3. School of Oral Hygiene, College of Oral Medicine Taipei Medical University Taipei Taiwan
4. School of Dentistry National Defense Medical Center Taipei Taiwan
5. Institute of Epidemiology and Preventive Medicine, College of Public Health National Taiwan University Taipei Taiwan
6. Department of Oral Health Ministry of Health and Welfare Taipei Taiwan
7. Department of Dentistry Cheng Hsin General Hospital Taipei Taiwan
8. Department of Stomatology Kaohsiung Veteran General Hospital Kaohsiung Taiwan