1. Department of Nephrology, RIPAS Hospital, Bandar Seri Begawan BA1710, Brunei Darussalam
2. Universiti Brunei Darussalam, Bandar Seri Begawan BA1710, Brunei Darussalam
3. Department of Surgery, RIPAS Hospital, Bandar Seri Begawan BA1710, Brunei Darussalam