5Nervi F, Duarte I, Gomez G, et al. Frequency of gallbladder cancer in Chile, a high - rist area. Int J Cancer, 1988, 41 (5) :657 - 660.
6Nervi F,Duarte I, Gomez G, et al. Frequency of gallbladder cancer in Chile, a high-fist area. Int J Cancer, 1988, 41 (5) :657-660.
7Roa I, De A, Araya JC, et al. Inceititient gallbladder carcinoma clinical and pathological study and prognosis in 196 cases[J]. Rev Meal Chin,2001,129(10):1213-1220.