AbstractGet full access to this articleView all access options for this article.Get accessReferences1.Cada DJ (ed), Baker D.E. , Levien T. Quadrivalent human papillomavirus (types 6, 11, 16, 18) recombinant. The Formulary Monograph Service Web site. (August 2006). http://www.factsandcomparisons.com/products/index.aspx?id=124. Accessed July 23, 2007.