[1] Natl Taiwan Univ Hosp, Taipei, Taiwan
[2] San Juan De Dios Hosp, Pasay City, Philippines
[3] Peking Univ, Canc Hosp, Minist Educ, Dept Gastrointestinal Oncol,Key Lab Carcinogenesi, Beijing 100871, Peoples R China
[4] Queen Elizabeth Hosp, Adelaide, SA, Australia
[5] Chang Gung Mem Hosp, Taoyuan, Taiwan
[6] Chonnam Natl Univ, Hawsun Hosp, Hwasuneup, South Korea
[7] Peoples Liberat Army, Gen Hosp, Beijing, Peoples R China
[8] Taipei Vet Gen Hosp, Taipei, Taiwan
[9] All India Inst Med Sci, New Delhi, India
[10] Chinese Univ Hong Kong, Prince Wales Hosp, Sha Tin, Hong Kong, Peoples R China
[11] Mt Miriam Canc Hosp, George Town, Malaysia
[12] Sun Yat Sen Univ, Ctr Canc, Guangzhou 510275, Guangdong, Peoples R China
[13] Aga Khan Univ & Hosp, Karachi, Pakistan
[14] Siriraj Hosp, Bangkok, Thailand
[15] Univ Hong Kong, Dept Surg, Hong Kong, Hong Kong, Peoples R China
[16] Merck KGaA, Darmstadt, Germany
[17] Natl Univ Hlth Syst, Singapore, Singapore