[1] Singapore Gen Hosp, Outram Rd, Singapore 169608, Singapore
[2] Thammasat Univ Hosp, Bangkok, Thailand
[3] Artemis Hosp, New Delhi, India
[4] Infect Control Consultancy ICC, Melbourne, Vic, Australia
[5] Yamagata Univ Hosp, Yamagata, Japan
[6] Cho Ray Hosp, Ho Chi Minh, Vietnam
[7] Hong Kong Baptist Hosp, Kowloon, Hong Kong, Peoples R China
[8] Chong Hua Hosp, Cebu, Philippines
[9] Sichuan Univ, West China Hosp, Chengdu 610064, Peoples R China
[10] Asan Med Ctr, Seoul, South Korea
[11] Mackay Mem Hosp, Taipei, Taiwan