Authors: SIVIN I LAHTEENMAKI P RANTA S DARNEY P KLAISLE C WAN LV MISHELL DR LACARRA M VIEGAS OAC BILHAREUS P KOETSAWANG S PIYAANANT M DIAZ S PAVEZ M ALVAREZ F BRACHE V LAGUARDIA K NASH H STERN J

Citation: I. Sivin et al., LEVONORGESTREL CONCENTRATIONS DURING USE OF LEVONORGESTREL ROD (LNG ROD) IMPLANTS, Contraception, 55(2), 1997, pp. 81-85