R A Lyons, H Fielder, B N Littlepage. Show Affiliations »
Abstract
Mesh: See more » AdultHealth StatusHealth SurveysHumansRandom AllocationSleep Wake Disorders/epidemiologySurveys and QuestionnairesWales/epidemiology
Year: 1993 PMID: 8374479 PMCID: PMC1678436 DOI: 10.1136/bmj.307.6901.449-b
Source DB: PubMed Journal: BMJ ISSN: 0959-8138