Evaristo, Simone Maia, et al. “Conventional and Liquid-Based Cytology (Liqui-PREP™) Anal Findings in Male HIV Anoreceptive Patients in a Referral University Hospital in Rio De Janeiro, Brazil”. Brazilian Journal of Sexually Transmitted Diseases, vol. 30, no. 1, Mar. 2018, pp. 20-24, https://bjstd.org/revista/article/view/814.