A T Wielgosz, E Nicholls, E Biro, L MacWilliam, Y Mao. Show Affiliations »
Abstract
Mesh: See more » Epidemiologic MethodsHumansRandom AllocationResearch DesignSampling StudiesTelephone
Year: 1987 PMID: 3607700
Source DB: PubMed Journal: Can J Public Health ISSN: 0008-4263