Hernandez AL, Karthik R, Sivasubramanian M, Raghavendran A, Gnanamony M, Lensing S, Lee JY, Kannangai R, Abraham P, Mathai D, Palefsky JM. Prevalence of Anal HPV Infection Among HIV-Positive Men Who Have Sex With Men in India. J Acquir Immune Defic Syndr. 2016 Apr 01; 71(4):437-43.