| Literature DB >> 14074462 |
Abstract
Keywords: INFANT MORTALITY; INFANT, NEWBORN; INFANT, PREMATURE; LABOR PRESENTATION; PREGNANCY; STATISTICS; UNITED STATES
Mesh:
Year: 1964 PMID: 14074462 DOI: 10.1001/jama.1964.03060170016003
Source DB: PubMed Journal: JAMA ISSN: 0098-7484 Impact factor: 56.272