We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEffect of Human Papillomavirus 16/18 L1 Viruslike Particle Vaccine Among Young Women With Preexisting Infection: A Randomized TrialAuthorsHildesheim, Allan; Herrero, Rolando; Wacholder, Sholom; Rodriguez, Ana C.; Solomon, Diane; Bratti, M. Concepcion; Schiller, John T.; Gonzalez, Paula; Dubin, Gary; Porras, Carolina; Jimenez, Silvia E.; Lowy, Douglas R.; Costa Rican HPV Vaccine Trial Group, for thePublicationJAMA, 2007, Vol 298, Issue 7, p743ISSN0098-7484Publication typearticleDOI10.1001/jama.298.7.743