THE "ARROW TUBE".
D002648:Child; D003033:Coal Tar; D004864:Equipment and Supplies; D006801:Humans; D010033:Otitis Media; D010036:Otolaryngology; D013812:Therapeutics
D003033:Coal Tar
CHILD; EQUIPMENT AND SUPPLIES; OTITIS MEDIA; OTORHINOLARYNGOLOGY; THERAPEUTICS