Acknowledgement:
Investigators of the Thailand COVID-19 Team: Kulkanya Chokephaibulkit, Alan Maleesatharn, Faculty of Medicine Siriraj Hospital, Mahidol University; Narumol Sawanpanyalert, Department of Medical Services, Ministry of Public Health; Rujipas Sirijatuphat, Faculty of Medicine Siriraj Hospital, Mahidol University; Piamlarp Sangsayunh, Central Chest Hospital; Opass Putcharoen, Thai Red Cross Emerging Infectious Diseases Clinical Center, Faculty of Medicine, Chulalongkorn university; Weerawat Manosuthi, Bamrasnaradura Infectious Diseases Institute, Department of Diseases Control, Ministry of Public Health; Poj Intalapaporn, Division of infectious disease Medicine Rajavithi Hospital, Ministry of Public Health; Nattawan Palavutitotai, Lerdsin Hospital; Worawan Samritmanoporn, Nopparat Rajathanee Hospital; Apatcha Pungjitprapai, Department of Medicine, Charoenkrung Pracharak Hospital.
The authors thank Tim R. Cressey, PhD (PHPT/IRD UMI 174, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand) for his contribution to the manuscript.