[1] MURDOCH UNIV,SCH BIOL & ENVIRONM SCI,MURDOCH,WA 6150,AUSTRALIA
[2] MAHIDOL UNIV,INST SCI & TECHNOL RES & DEV,THALASSEMIA CTR,BANGKOK,THAILAND
[3] MAHIDOL UNIV,FAC GRAD STUDIES,BANGKOK,THAILAND
[4] MAHIDOL UNIV,SIRIRAJ HOSP,FAC MED,DEPT MED,DIV HEMATOL,BANGKOK,THAILAND