The use of tobacco-free betel-quid in conjunction with alcohol/tobacco impacts early-onset age and carcinoma distribution for upper aerodigestive tract cancer

Lee CH, Lee KW, Fang FM, Wu DC, Shieh TY, Huang HL, Chen CH, Chen PH, Chen MK, Kuo SJ, Chang CH, Tsai YS, Chiang SL, Tu HP, Chen BH, Ko YC. The use of tobacco-free betel-quid in conjunction with alcohol/tobacco impacts early-onset age and carcinoma distribution for upper aerodigestive tract cancer. J Oral Pathol Med. 2011; 40(9): 684-92.