Anal human papillomavirus infection among Thai men who have sex with men with and without HIV infection: prevalence, incidence, and persistence.

Phanuphak N, Teeratakulpisarn N, Pankam T, Kerr SJ, Barisri J, Deesua A, Rodbamrung P, Hongchookiat P, Chomchey N, Phanuphak P, Sohn AH, Ananworanich J, Palefsky JM