Lee, Nancy C.; Rosero-Bixby, Luis; Oberle, Mark W.; Grimaldo Vásquez, Carmen; Whatley, Annes S.; Rovira, Elizabeth Z.
(Oxford University Press, 1987)
By 1981, 11% of married women in Costa Rica ages
20-49 years had used depot-medroxyprogesterone acetate (DMPA)
and 58% had used oral contraceptives (OCs). Since 1977, the
Costa Rican Ministry of Health has maintained ...