作者单位:Wenzhou Med Univ, Taizhou Hosp Zhejiang Prov, Dept Hepatobiliary Surg, Linhai, Peoples R China[1]Second Mil Med Univ, Eastern Hepatobiliary Surg Hosp, Shanghai, Peoples R China[2]Univ Michigan, Sch Dent, Dept Biol & Mat Sci, Ann Arbor, MI 48109 USA[3]