1. Hematology and Transfusion Science Research Center, Walailak University, Nakhon Si Thammarat 80160, Thailand
2. Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
3. Department of Clinical Pathology and Anatomy, Chumphon Ket‑Udomsak Hospital, Chumphon 86000, Thailand
4. Department of Pediatrics, Vachira Phuket Hospital, Phuket 83000, Thailand
5. Department of Internal Medicine, Hatyai Hospital, Songkhla 90110, Thailand
6. Department of Pediatrics, Suratthani Hospital, Suratthani 84000, Thailand
7. Department of Pediatrics, Maharaj Nakhon Si Thammarat Hospital, Nakhon Si Thammarat 80000, Thailand