Expert Rev of Obstet Gynecol. 2011;6(1):45-56. Implanon is an etonogestrel-containing single sterile rod implant. Implanon was introduced in 1998, and was the first and remains the only single ...

Contraception 36:145-157, 1987. Wang SL, Wu SC, Xin XM, et al: Three years' experience with levonorgestrel-releasing intrauterine device and Norplant-2d implants: A randomized comparative study.