[1] Sungkyunkwan Univ, Sch Med, Div Infect Dis, Samsung Med Ctr,Dept Med,Kangnam Ku, Seoul 135710, South Korea
[2] Asan Med Ctr, Seoul, South Korea
[3] Nagoya Univ, Nagoya, Aichi, Japan
[4] Nagasaki Univ, Nagasaki 852, Japan
[5] Shanghai Med Univ, Shanghai 200032, Peoples R China
[6] Chulalongkorn Univ, Bangkok 10330, Thailand
[7] Siriraj Hosp, Bangkok, Thailand
[8] Chang Gung Childrens Hosp, Taipei, Taiwan
[9] Christian Med Coll & Hosp, Vellore 632004, Tamil Nadu, India
[10] Univ Colombo, Colombo, Sri Lanka
[11] Natl Univ Singapore, Singapore 117548, Singapore
[12] Univ Kebangsaan Malaysia, Kuala Lumpur, Malaysia
[13] Univ Indonesia, Jakarta, Indonesia
[14] Nhi Dong 2 Childrens Hosp, Ho Chi Minh City, Vietnam
[15] Case Western Reserve Univ, Cleveland, OH 44106 USA
[16] Milton S Hershey Med Ctr, Hershey, PA 17033 USA