title: Prevalence of lactose intolerance in children with recurrent abdominal pain.
mesh_terms: D000005:Abdomen; D002648:Child; D005260:Female; D006801:Humans; D007787:Lactose Intolerance / Q000150:complications*; D008297:Male; D010146:Pain / Q000209:etiology*; D012008:Recurrence