1. Faculty of Medicine, Department of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
2. Research Unit in Translational Hematology, Chulalongkorn University, Bangkok, Thailand
3. Faculty of Medicine, Department of Medicine, Mahidol University Ramathibodi Hospital, Bangkok, Thailand
4. Faculty of Medicine, Department of Internal Medicine, Chiang Mai University, Chiang Mai, Thailand
5. Faculty of Medicine, Department of Medicine, Khon Kaen University, Khon Kaen, Thailand