title: Childhood immunization in Papua New Guinea--re: A survey of age at first immunization in the Aiyura Valley.
authors.forename: John D
authors.initials: JD
authors.lastname: Vince
mesh_terms: D002648:Child; D002675:Child, Preschool; D006801:Humans; D007114:Immunization / Q000592:standards*; D010219:Papua New Guinea