| Literature DB >> 14161769 |
Abstract
Entities:
Keywords: INFANT CARE; INFANT, PREMATURE; MATERNAL WELFARE; PREGNANCY; PRENATAL CARE; REVIEW; SOCIAL CONDITIONS; SOCIAL SERVICE; STATISTICS; UNITED STATES
Mesh:
Year: 1964 PMID: 14161769 DOI: 10.1056/NEJM196408062710608
Source DB: PubMed Journal: N Engl J Med ISSN: 0028-4793 Impact factor: 91.245