. Show Affiliations »
Abstract
Mesh: See more » AdolescentAdultChildChild, PreschoolEducation, MedicalFemaleHumansInfantInfant, NewbornMalePediatrics/educationUnited Kingdom
Year: 1967 PMID: 6020080 PMCID: PMC1840978
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447