1. Dienstag JL. Acute viral hepatitis. In : Longo DL, Fauci AS, Kasper DL, Hauser SL, Jameson JL, Loscalzo J, editors. Harrison's principles of internal medicine. 18th ed. New York: McGraw-Hill;2012.
2. Bonanni P, Boccalini S, Bechini A. Vaccination against hepatitis A in children: a review of the evidence. Ther Clin Risk Manag. 2007; 3:1071–1076.
5. Advisory Committee on Immunization Practices (ACIP). Fiore AE, Wasley A, Bell BP. Prevention of hepatitis A through active or passive immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR Recomm Rep. 2006; 55:1–23.
6. Dorell CG, Yankey D, Byrd KK, Murphy TV. Hepatitis A vaccination coverage among adolescents in the United States. Pediatrics. 2012; 129:213–221.
7. Lu PJ, Byrd KK, Murphy TV. Hepatitis A vaccination coverage among adults 18-49 years traveling to a country of high or intermediate endemicity, United States. Vaccine. 2013; 31:2348–2357.
8. Lu PJ, Euler GL, Hennessey KA, Weinbaum CM. Hepatitis A vaccination coverage among adults aged 18-49 years in the United States. Vaccine. 2009; 27:1301–1305.
9. Korea Center for Disease Control and Prevention, Korea Medical Association. Hepatitis. In : Lee DH, editor. Epidemiology and prevention of vaccine-preventable disease. 4th ed. Osong: Osong Health Technology Administration Complex, Korea Centers for Disease Control and Prevention;2013. p. 383–402.
10. Kim JH. Recent epidemiological status and vaccination of hepatitis A in Korea. J Korean Med Assoc. 2008; 51:110–118.
11. Ki M. Risk factors, mathematical modelling and economic analysis for hepatitis A in Korea. Public Health Wkly Rep. 2010; 3:85–90.
12. Choi EH. Prioritization of intruduction to the National Immunization Program. Seoul: Korea Centers for Desease Control & Prevention, Seoul National University;2010.
13. Kim E, Kwon Y. Introduction of haemophilus influenzaetype b vaccine into national immunization program in Korea. Public Health Wkly Rep. 2013; 6:629–634.
14. Oh H. Current status of National Immunization Program for Children, 2012. Public Health Rep Wkly. 2013; 6:697–701.
15. Centers for Disease Control and Prevention (CDC). National, state, and local area vaccination coverage among adolescents aged 13-17 years: United States, 2008. MMWR Morb Mortal Wkly Rep. 2009; 58:997–1001.
16. Petty TJ, Callahan ST, Chen Q, Edwards KM, Dempsey AF. Assessment of parental acceptance of a potential cytomegalovirus vaccine for adolescent females. Vaccine. 2010; 28:5686–5690.
17. Holman DM, Benard V, Roland KB, Watson M, Liddon N, Stokley S. Barriers to human papillomavirus vaccination among US adolescents: a systematic review of the literature. JAMA Pediatr. 2014; 168:76–82.
18. Wershof Schwartz A, Clarfield AM, Doucette JT, Valinsky L, Karpati T, Landrigan PJ, Sternberg SA. Disparities in pneumococcal and influenza immunization among older adults in Israel: a cross-sectional analysis of socio-demographic barriers to vaccination. Prev Med. 2013; 56:337–340.
19. Statistics Korea. Report on the survey of household finances and living conditions, 2012. Daejeon: Statistics Korea;2013.
20. Dombkowski KJ, Lantz PM, Freed GL. Risk factors for delay in age-appropriate vaccination. Public Health Rep. 2004; 119:144–155.
21. Pavlopoulou ID, Michail KA, Samoli E, Tsiftis G, Tsoumakas K. Immunization coverage and predictive factors for complete and age-appropriate vaccination among preschoolers in Athens, Greece: a cross--sectional study. BMC Public Health. 2013; 13:908.
22. Pearce A, Law C, Elliman D, Cole TJ, Bedford H. Millennium Cohort Study Child Health Group. Factors associated with uptake of measles, mumps, and rubella vaccine (MMR) and use of single antigen vaccines in a contemporary UK cohort: prospective cohort study. BMJ. 2008; 336:754–757.
23. Dempsey AF, Zimet GD, Davis RL, Koutsky L. Factors that are associated with parental acceptance of human papillomavirus vaccines: a randomized intervention study of written information about HPV. Pediatrics. 2006; 117:1486–1493.
25. Yeager DS, Krosnick JA, Chang L, Javitz HS, Levendusky MS, Simpser A, Wang R. Comparing the accuracy of RDD telephone surveys and internet surveys conducted with probability and non-probability samples. Public Opin Q. 2011; 75:709–747.