A randomized comparison of the effects on vaginal and cervical epithelium of a placebo vaginal ring with non-use of a ring

Reference

Weisberg E, Fraser IS, Baker J, Archer D, Landgren BM, Killick S, Soutter P, Krause T, d'Arcangues C, 2000, A randomized comparison of the effects on vaginal and cervical epithelium of a placebo vaginal ring with non-use of a ring, Contraception, 62(2) 83-9