[1] Natl Cheng Kung Univ, Coll Med, Tainan 70101, Taiwan
[2] Tri Serv Gen Hosp, Taipei, Taiwan
[3] Changhua Christian Hosp Hosp, Changhua, Taiwan
[4] Singapore Gen Hosp, Singapore 0316, Singapore
[5] Univ Malaya, Med Ctr, Kuala Lumpur, Malaysia
[6] Concord Repatriation Gen Hosp, Concord, NSW, Australia
[7] Univ Sydney, Westmead Hosp, Storr Liver Unit, Westmead, NSW, Australia
[8] Bristol Myers Squibb Pharmaceut Res Inst, Wallingford, CT USA
[9] Bristol Myers Squibb Pharmaceut Res Inst, Singapore, Singapore