O. McDonald

发表

Three-year experience with NORPLANT subdermal contraception.

I. Sivin, E. Coutinho, S. Díaz, 1983, Fertility and sterility.

The NORPLANT contraceptive method: a report on three years of use.

I. Sivin, E. Coutinho, S. Díaz, 1982, Studies in family planning.

Norplant: reversible implant contraception.

N. Nielsen, I. Sivin, E. Coutinho, 1980, Studies in family planning.