Affiliation: | 1. Department of Pediatrics, Srinakharinwirot University, , Nakorn Nayok, Thailand;2. Department of Pediatrics, Mahidol University, , Bangkok, Thailand;3. Department of Clinical Pathology, Mahidol University, , Bangkok, Thailand;4. Department of Pathology, Ramathibodi Hospital, Mahidol University, , Bangkok, Thailand |