[1] Mahidol Univ, Dept Microbiol, Fac Med, Siriraj Hosp, Bangkok 10700, Thailand
[2] Natl Sci & Technol Dev Agcy, Natl Ctr Genet Engn & Biotechnol, Pathum Thani 12120, Thailand
[3] Siriraj Fdn, Drug Resistant TB Res Fund, Bangkok 10700, Thailand
[4] Vichaiyut Hosp, Bangkok 10400, Thailand