Matthias Egger, Douglas G Altman, Jan P Vandenbroucke. Show Affiliations »
Abstract
Mesh: See more » Epidemiologic MethodsHumansObservation/methodsPeriodicals as TopicPublishing/standardsQuality Control
Year: 2007 PMID: 17911150 DOI: 10.1093/ije/dym199
Source DB: PubMed Journal: Int J Epidemiol ISSN: 0300-5771 Impact factor: 7.196