RT Journal Article SR Electronic T1 Safrole in betel quid may be a risk factor for hepatocellular carcinoma: case report JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 359 OP 360 VO 162 IS 3 A1 Chung-Ji Liu A1 Chiu-Lan Chen A1 Kuo-Wei Chang A1 Cheng-Hsin Chu A1 Tsung-Yun Liu YR 2000 UL http://www.cmaj.ca/content/162/3/359.abstract