P L Chong1, J Pisharam2, A Abdullah3, V H Chong4. 1. From the Division of Diabetes and Endocrinology, Department of Internal Medicine, Department of Internal Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei Darussalam. 2. Department of Renal Services, Department of Internal Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei Darussalam. 3. Department of Obstetrics and Gynaecology, Department of Internal Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei Darussalam. 4. Division of Gastroenterology and Hepatology, Department of Internal Medicine, RIPAS Hospital, Bandar Seri Begawan, Brunei Darussalam.