1 Division of Hematology and Oncology, Department of Pediatrics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
2 Center for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
3 Department of Obstetrics and Gynecology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.