6Kayahara M, Nagakawa T. Recent trends of gallbladder cancer in Ja- pan: an analysis of 4,770 patients [ J ]. Cancer, 2007,110 (3) :572 - 580.
7Kumar JR, Tewari M, Rai A, et al. An objective assessment of demog- raphy of gallbladder eaneer [ J ]. J Surg Oneol, 2006,93 ( 8 ) : 610 - 614.
8Ji J, Hemminki K. Variation in the risk for liver and gallbladder cancers In and occupational groups in Sweden with etiological im- plications[ J]. Int Arch Occup Environ Health, 2005,78 ( 8 ) : 641-649.
9Wang HH, Mdhal NH, Wang DQ. Overexpression of estrogen receptor alpha increases hepatic cholesterogenesis, leading to biliary hypersecre- tion in mice[J]. J Lipid Res, 2006,47(4) :778 -786.
10Liu B, Balkwill A, Roddam A, et al. Separate and joint effects of alco- hol and smoking on the risks of cirrhosis and gallbladder disease in mid- dle -aged women[ J]. Am J Epidemiol, 2009,169(2) :153 -160.