| Literature DB >> 6846319 |
Abstract
Keywords: Americas; Contraceptive Usage; Data Collection; Developed Countries; Epidemiologic Methods; Health; Interviews; North America; Northern America; Pregnancy; Public Health; Research Methodology; Sampling Studies; Studies; Survey Methodology; Surveys; United States
Mesh:
Year: 1983 PMID: 6846319 DOI: 10.1093/oxfordjournals.aje.a113586
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897