Haemoglobin levels in nursery school children.
D000747:Anemia, Hypochromic / Q000453:epidemiology; D002675:Child, Preschool; D005260:Female; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D008297:Male; D012578:Schools, Nursery
D006454:Hemoglobins