Effectiviness of the use of contraception in the voluntary family planning program of the Instituo Mexicano del Seguro Social.
D000047:Academies and Institutes; D003267:Contraception; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008800:Mexico; D009313:National Health Programs; D011247:Pregnancy; D012943:Social Security
Efectividad en el uso de anticoncepción en el Programa de Planificación Familiar Voluntaria, del Instituto Mexicano del Seguro Social.