Cross-sectional study of genital, rectal, and pharyngeal Chlamydia and gonorrhea in women in rural South Africa.

Peters RP, Dubbink JH, van der Eem L, Verweij SP, Bos ML, Ouburg S, Lewis DA, Struthers H, McIntyre JA, Morré SA.
Sex Transm Dis. 2014 Sep;41(9):564-9. doi: 10.1097/OLQ.0000000000000175.