Anovulation, inadequate luteal phase and poor sperm penetration in cervical mucus during prolonged use of NORPLANTR implants

Plasma levels of d-norgestrel, estradiol and progesterone during treatment with silastic implants containing d-norgestrel

Erik Weiner, Elof D.B. Johansson · Contraception · 1976 · 123 citations

Medicine, Endocrinology, Gynecology +9

A five-year clinical trial of levonorgestrel silastic implants (Norplant™)

Margarita Pavez, Patricia Y. Miranda, Dale N. Robertson et al. · Contraception · 1982 · 113 citations

Medicine, Surgery, Implant Surgery +2

Fertility control in women with a progestogen released in microquantities from subcutaneous capsules

H Croxatto, Ruth Vera, M Etchart et al. · American Journal of Obstetrics and Gynecology · 1969 · 97 citations

Medicine, Endocrinology, Pharmaceutics +14

A Four-Year Clinical Study of NORPLANT Implants

Irving Sivin, Pentti Holma, Francisco Alvarez‐Sánchez et al. · Studies in Family Planning · 1983 · 82 citations

Medicine, Surgery, Contraception +11

Plasma progesterone levels during long-term treatment with levonorgestrel silastic implants

Horacio B. Croxatto, Margarita Pavez, Patrícia Miranda et al. · European Journal of Endocrinology · 1982 · 64 citations

Medicine, Endocrinology, Gynecology +14