| Literature DB >> 14052277 |
Abstract
Keywords: HEALTH OCCUPATIONS; MASSACHUSETTS; PUBLIC HEALTH; PUBLIC HEALTH ADMINISTRATION
Mesh:
Year: 1963 PMID: 14052277 DOI: 10.1056/NEJM196311212692105
Source DB: PubMed Journal: N Engl J Med ISSN: 0028-4793 Impact factor: 91.245