The carcinogenic potentials of 'opium smoker's tongue'.
D000368:Aged; D002273:Carcinogens; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009892:Opium / Q000009:adverse effects*; D011230:Precancerous Conditions; D012907:Smoking / Q000150:complications*; D014062:Tongue Neoplasms / Q000209:etiology*
D002273:Carcinogens; D009892:Opium