1. Ministry of Health and Welfare. 2000 Korean National Oral Health Survey. Seoul: Ministry of Health & Welfare;2001. p. 25–42.
2. Ministry of Health and Welfare. 2003 Korean National Oral Health Survey: III Survey Results. Seoul: Ministry of Health and& Wel-fare;2003. p. 5–40.
3. Ministry of Health and Welfare. 2006 Korean National Oral Health Survey: II Survey Results. Seoul: Ministry of Health & Wel-fare;2007. p. 3–49.
4. Ministry of Health and Welfare. 2010 Korean National Oral Health Survey: II Survey Results. Seoul: Ministry of Health & Wel-fare;2011. p. 3–42.
5. Ministry of Health & Welfare, Korea Centers for Disease Control and Prevention. Korea Health Statistics 2009: The Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV-3). Seoul: Ministry of Health & Welfare;2010. p. 13–34.
6. Ministry of Health and Welfare. Advanced analysis of Korean national oral health survey. Seoul: Ministry of Health and Wel-fare;2011. p. 11–44.
8. Article 3, Framework Act on Health Examination. Act No. 10333 (partial revision 2010 May 31).
9. Article 15, Framework Act on Health Examination. Act No. 10333 (partial revision 2010 May 31).
10. Article 9, Oral Health Act. Act No. 10789 (partial revision 2010 October 18).