N Black1. Show Affiliations » 1. Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, UK.
Abstract
Mesh: See more » Clinical Medicine/standardsClinical Medicine/statistics & numerical dataDatabases, FactualHumansInformation SystemsQuality Assurance, Health CareResearchUnited Kingdom
Year: 1999 PMID: 10217078 DOI: 10.1016/S0140-6736(99)00108-7
Source DB: PubMed Journal: Lancet ISSN: 0140-6736 Impact factor: 79.321