Factors affecting vaginal pH levels among female adolescents attending genitourinary medicine clinics
L Brabin, S A Roberts, E Fairbrother, D Mandal, S P Higgins, S Chandiok, P Wood, G Barnard, H C Kitchener
Sexually Transmitted Infections Dec 2005, 81 (6) 483-487; DOI: 10.1136/sti.2005.014621