[1] Thammasat Univ, Internal Med, Fac Med, Pathum Thani, Thailand
[2] Thammasat Univ Hosp, Med Diagnost Unit, Pathum Thani, Thailand
[3] Thammasat Univ Hosp, Ctr Excellence Allergy Asthma & Pulm Dis, Pathum Thani, Thailand
[4] Thammasat Univ, Clin Epidemiol, Fac Med, Pathum Thani, Thailand
[5] Thammasat Univ, Community Med & Family Med, Fac Med, Pathum Thani, Thailand
[6] Thammasat Univ, Pediat, Fac Med, Pathum Thani, Thailand