| Literature DB >> 6063561 |
R Steele, A S Kraus, J T Langworth.
Abstract
Entities:
Keywords: Age Factors; Americas; Behavior; Canada; Demographic Factors; Developed Countries; Economic Factors; Education; Epidemiologic Methods; Infant Mortality; Maternal Age; Mortality; North America; Northern America; Parental Age; Population; Population Characteristics; Population Dynamics; Research Methodology; Smoking; Socioeconomic Factors; Socioeconomic Status
Mesh:
Year: 1967 PMID: 6063561
Source DB: PubMed Journal: Can J Public Health ISSN: 0008-4263