Costa, Fernando Augusto Miranda da, et al. “The Th1-Th2 Profile in Immune Responses to Human Papillomavirus (HPV) in Vitro in Men from the City of São Paulo, Brazil”. Brazilian Journal of Sexually Transmitted Diseases, vol. 31, no. 1, May 2019, pp. 7-13, https://www.bjstd.org/revista/article/view/848.