[On the problem of shellac calculi in the stomach].
D002137:Calculi; D005547:Foreign Bodies; D006801:Humans; D010126:Ozone / Q000633:toxicity*; D012116:Resins, Plant; D013270:Stomach
D012116:Resins, Plant; C003934:shellac; D010126:Ozone
OZONE/toxicology; STOMACH/foreign bodies