RT Journal Article SR Electronic T1 Anogenital preinvasive and invasive lesions in the Limpopo Province of South Africa JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 293 OP 293 DO 10.1136/sextrans-2014-051807 VO 91 IS 4 A1 Louis-Jacques van Bogaert YR 2015 UL http://sti.bmj.com/content/91/4/293.abstract AB