Comment on

• Epidemiologic profile of type-specific human papillomavirus infection and cervical neoplasia in Guanacaste, Costa Rica.

  Herrero R, Castle PE, Schiffman M, Bratti MC, Hildesheim A, Morales J, Alfaro M, Sherman ME, Wacholder S, Chen S, Rodriguez AC, Burk RD. Herrero R, et al. J Infect Dis. 2005 Jun 1;191(11):1796-807. doi: 10.1086/428850. Epub 2005 May 2. J Infect Dis. 2005. PMID: 15871111
• A prospective study of age trends in cervical human papillomavirus acquisition and persistence in Guanacaste, Costa Rica.

  Castle PE, Schiffman M, Herrero R, Hildesheim A, Rodriguez AC, Bratti MC, Sherman ME, Wacholder S, Tarone R, Burk RD. Castle PE, et al. J Infect Dis. 2005 Jun 1;191(11):1808-16. doi: 10.1086/428779. Epub 2005 May 2. J Infect Dis. 2005. PMID: 15871112
• Seroprevalence of human papillomavirus type 16 in children.

  Dunne EF, Karem KL, Sternberg MR, Stone KM, Unger ER, Reeves WC, Markowitz LE. Dunne EF, et al. J Infect Dis. 2005 Jun 1;191(11):1817-9. doi: 10.1086/430274. Epub 2005 May 2. J Infect Dis. 2005. PMID: 15871113