(Q67275491)
Statements
Microdose intravaginal levonorgestrel contraception: a multicentre clinical trial. I. Contraceptive efficacy and side effects. World Health Organization. Task Force on Long-Acting Systemic Agents for Fertility Regulation (English)
S Koetsawang
G Ji
U Krishna
A Cuadros
G I Dhall
R Wyss
J Rodriquez la Puenta
A T Andrade
T Khan
1 February 1990