作者单位:Univ Minnesota, Int Diabet Inst, Minneapolis, MN 55455 USA[1]Sichuan Univ, West China Hosp, Dept Hepatobiliopancreat Surg, Chengdu 610041, Sichuan Provinc[2]Sichaun Univ, West China Hosp, Regenerat Med Res Ctr, Lab Transplant Engn & Immunol, Chengdu 610041[3]