| Literature DB >> 13320212 |
Abstract
Entities:
Keywords: INFANT, NEWBORN/statistics; STILLBIRTH/statistics; TWINS/statistics; VITAL STATISTICS
Mesh:
Year: 1956 PMID: 13320212 DOI: 10.1111/j.1471-0528.1956.tb05462.x
Source DB: PubMed Journal: J Obstet Gynaecol Br Emp ISSN: 0307-1871