C V Tong1, Z Hussein2. 1. From the Endocrine Unit, Department of Medicine, Hospital Putrajaya, Pusat Pentadbiran Kerajaan Persekutuan, Presint 7, Putrajaya 62250, Malaysia tchinvoon@yahoo.com. 2. From the Endocrine Unit, Department of Medicine, Hospital Putrajaya, Pusat Pentadbiran Kerajaan Persekutuan, Presint 7, Putrajaya 62250, Malaysia.