[1] Tsinghua Univ, Sch Clin Med, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Sch Clin Med, Beijing Tsinghua Changgung Hosp, Hepatobiliary Pancreat Ctr, Beijing 102218, Peoples R China
[3] Tsinghua Univ, Sch Med, Beijing 100084, Peoples R China
[4] Tsinghua Univ, Sch Clin Med, Beijing Tsinghua Changgung Hosp, Dept Anesthesiol, Beijing 102218, Peoples R China
[5] Thorgene Co Ltd, Beijing 100176, Peoples R China