[Three cases of the foreign bodies of button batteries in the nasal cavity].
D002057:Burns, Chemical / Q000209:etiology; D002675:Child, Preschool; D011211:Electric Power Supplies; D004560:Electricity; D005260:Female; D005547:Foreign Bodies / Q000628:therapy*; D006801:Humans; D008297:Male; D009296:Nasal Cavity