[1] Mahidol Univ, Fac Trop Med, Dept Trop Pediat, 420-6 Rajvithi Rd, Bangkok 10400, Thailand
[2] Nopparat Rajathanee Hosp, Minist Publ Hlth, Bangkok, Thailand
[3] Mahidol Univ, Inst Mol Biosci, Ctr Vaccine Dev, Japanese Encephalitis Dengue Virol Lab, Bangkok, Thailand
[4] Liaoning Cheng Da Biotechnol Co Ltd, Shenyang, Liaoning, Peoples R China