1. Hematology and Health Technology Research Center, Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
2. Department of Clinical Pathology, Laboratory Hematology Unit, Lampang Central Hospital, Lampang, Thailand
3. Department of Medical Technology, Division of Hematology, Sawan Pracharuk Hospital, Nakorn Sawan, Thailand