1. Department of Paediatrics , Faculty of Medicine , Chulalongkorn University , Bangkok 10330 , Thailand
2. Division of Endocrinology , Department of Paediatrics, Faculty of Medicine , Chulalongkorn University , Bangkok 10330 , Thailand
3. School of Pharmacy , Walailak University , Nakhon Si Thammarat , 80161 , Thailand
4. Department of Pharmacy , Faculty of Pharmacy , Mahidol University , Bangkok , 10400 , Thailand