1. The effects of a progestin-only oral contraceptive (levonorgestrel 0.03 mg) on breast-feeding;McCann;Contraception,1989
2. Effects of hormonal contraceptives on milk and infant growth;World Health Organization Special Programme of Research, Development, and Training in Human Reproduction, Task Force on oral Contraceptives;Contraception,1984
3. Effect of oral contraceptives on the production and composition of human milk;Gupta,1977
4. Clinical, biochemical, and experimental studies of lactation. V. Clinical effects of steroids on the initiation of lactation;Kamal;Am J Obstet Gynecol,1970
5. Hormonal contraception: new long-acting methods;Liskin;Population Report Series K, Injectables and Implants,1987