V Cardenas1, C Sanchez, F De la Hoz, J H Jara, M Velandia, M Martinez, J Raad. Show Affiliations » 1. National Institute of Health, Bogotá, Columbia.
Abstract
Mesh: See more » ColombiaEpidemiology/educationHumansPublic Health/economicsPublic Health/education
Year: 1998 PMID: 9736889
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308