Safety and Efficacy of Levonorgestrel Implant, Intrauterine Device, and Sterilization

MEIRIK, OLAV; FARLEY, TIMOTHY M. M.; SIVIN, IRVING; More

Obstetrics & Gynecology . 97(4):539-547, April 2001.

Levonorgestrel Capsule Implants in the United States: A 5-Year Study.

SIVIN, IRVING; MISHELL, D. R. Jr; DARNEY, PHILIP; More

Obstetrics & Gynecology . 92(3):337-344, September 1998.