1. 1Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
2. 2Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
3. 3Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
4. 4Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
5. 5Department of Medicine, University of Miami/Jackson Memorial Hospital, Miami, FL
6. 6Department of Preventive and Social Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
7. 7Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
8. 8Faculty of Medicine, Srinakharinwirot University, Nakhon Nayok, Thailand
9. 9Thai Red Cross Emerging Infectious Diseases Clinical Center, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
10. 10Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
11. 11Department of Medicine, University of Arizona College of Medicine, Tucson, AZ
12. 12Center of Excellence in Translational Hematology, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand