title: [State of health of children in the 1st grade of elementary schools. Morbidity, absenteeism and scholastic progress and previous enrolment in kindergartens].
mesh_terms: D000041:Absenteeism; D002648:Child; D004521:Educational Measurement; D005260:Female; D006306:Health Surveys; D006801:Humans; D007859:Learning Disabilities / Q000453:epidemiology; D008297:Male; D011044:Poland; D012572:School Health Services; D012578:Schools, Nursery; D012959:Socioeconomic Factors
vernacular_title: Stan zdrowia dzieci klas pierwszych, absencja chorobowa i postepy w nauce a uczeszczanie do przedszkola