[1] Natl Taiwan Univ Hosp, Taipei, Taiwan
[2] Natl Cheng Kung Univ Hosp, Tainan 70428, Taiwan
[3] China Med Univ Hosp, Taichung, Taiwan
[4] Tri Serv Gen Hosp, Taipei, Taiwan
[5] Univ Minnesota, Mason Canc Care Ctr, Minneapolis, MN USA
[6] Boehringer Ingelheim GmbH & Co KG, Ridgefield, CT USA
[7] Boehringer Ingelheim GmbH & Co KG, Bracknell, Berks, England
[8] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA