title: [Developmental period medicine].
authors.affiliation: Zakładu Ochrony i Promocji Zdrowia Dzieci i Młodziezy, Instytutu Matki i Dziecka.
authors.forename: Krystyna
authors.initials: K
authors.lastname: Mikiel-Kostyra
mesh_terms: D002648:Child; D002657:Child Development; D006801:Humans; D010372:Pediatrics / Q000706:statistics & numerical data* / Q000639:trends; D011044:Poland; D011159:Population Surveillance; D011795:Surveys and Questionnaires