1. Jefatura de Servicios de Planiticacion Familiar, Instituto Mexicano del Seguro Social. Informe Estadistico 1983;Suddireccion General Medica,1985
2. Immediate postpartum insertion of IUDs;Thiery;IPPF Med Bull,1981
3. Early puerperal insertions of Copper-T-200;Laes;Contraception,1975
4. Postpartum insertion of modified intrauterine device;Cole;J Reprod Med,1984
5. Early postpartum and immediate postabortion intrauterine contraceptive device insertion;Rosenfeld;Am J Obstet Gynecol,1974