title: Letter: Curious curd.
mesh_terms: D000818:Animals; D001630:Bezoars / Q000209:etiology; D002675:Child, Preschool; D003371:Cough / Q000209:etiology; D003490:Cyanosis / Q000209:etiology; D006801:Humans; D008297:Male; D008892:Milk / Q000009:adverse effects*