Multiple HPV infections among men who have sex with men engaged in anal cancer screening in Abuja, Nigeria.

Nowak RG, Schumaker LM, Ambulos NP, Ndembi N, Dauda W, Nnaji CH, Mitchell A, Mathias TJ, Jibrin P, Darragh TM, Olaomi O, Crowell TA, Baral SD, Charurat ME, Bentzen SM, Palefsky JM, Cullen KJ