Ginecol Obstet Mex, 1977/2;41(244):179-84.
Ruíz Moreno JA, Rubio Lotvin B, Bolio Arista R, de Larios NM
PMID: 321297
Keywords: Clinical Research; Contraception; Contraceptive Agents, Estrogen--administraction and dosage; Contraceptive Agents, Estrogen--side effects; Contraceptive Agents, Female--administraction and dosage; Contraceptive Agents, Female--side effects; Contraceptive Agents, Progestin--administraction and dosage; Contraceptive Agents, Progestin--side effects; Contraceptive Agents--administraction and dosage; Contraceptive Agents--side effects; Contraceptive Effectiveness; Contraceptive Methods--side effects; Ethinyl Estradiol--administraction and dosage; Ethinyl Estradiol--side effects; Evaluation; Family Planning; Norethindrone--administraction and dosage; Norethindrone--side effects; Oral Contraceptives, Combined; Oral Contraceptives--side effects; Research Methodology; Use-effectiveness