Authors’ Affiliation:
1. Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
2. Department of Medical Services, Ministry of Public Health, Nonthaburi, Thailand
3. Central Chest Hospital, Nonthaburi, Thailand
4. Thai Red Cross Emerging Infectious Diseases Clinical Center, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
5. Bamrasnaradura Infectious Diseases Institute, Department of Diseases Control, Ministry of Public Health, Nonthaburi, Thailand
6. Division of Infectious Disease, Medicine Rajavithi Hospital, Bangkok, Thailand
7. Lerdsin Hospital, Bangkok, Thailand
8. Nopparat Rajathanee Hospital, Bangkok, Thailand
9. Department of Medicine, Charoenkrung Pracharak Hospital, Bangkok, Thailand
Conflict of interest: All authors declare that they have no conflicts of interest in relation to this work.