V Hrehorovich, W W Dyal, W D Schrack. Show Affiliations »
Abstract
Mesh: See more » AbsenteeismAdolescentAdultAge FactorsAgedChildChild, PreschoolDisease OutbreaksFemaleGeographyHumansInfantInfant MortalityInfluenza, Human/epidemiologyInfluenza, Human/mortalityMaleMiddle AgedOccupational MedicinePennsylvaniaPneumonia/mortalitySchool Health ServicesSex Factors
Year: 1972 PMID: 4644268 PMCID: PMC1616029
Source DB: PubMed Journal: Health Serv Rep ISSN: 0090-2918