L Freij. Show Affiliations »
Abstract
Entities: Species
Mesh: See more » AdolescentAnalysis of VarianceChildChild, PreschoolEpidemiologic MethodsEthiopiaFamilyHumansInfantInfant, NewbornModels, TheoreticalMorbidityPediatricsResearch Design
Year: 1977 PMID: 272820
Source DB: PubMed Journal: Acta Paediatr Scand Suppl ISSN: 0300-8843