| Literature DB >> 12255084 |
Abstract
Keywords: Africa; Americas; Asia; Contraception; Contraceptive Methods; Contraceptive Usage; Developed Countries; Europe; Family Planning; Latin America; North America; Northern America; Oceania; Oral Contraceptives; Research Methodology; Statistical Studies; Studies; United States
Mesh：
Substances：
Year: 1966 PMID： 12255084
Source DB: PubMed Journal: IPPF Med Bull ISSN： 0019-0357