title: Observations on nutritional rickets in childhood.
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009549:Nigeria; D012279:Rickets / Q000453:epidemiology / Q000209:etiology*; D014808:Vitamin D Deficiency / Q000150:complications* / Q000453:epidemiology