1 Department of Medicine, PMMPHAMB Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam.
2 Department of Radiology, RIPAS Hospital, Bandar Seri Begawan, Brunei Darussalam.
3 Department of Medicine, PMMPHAMB Hospital, Jalan, Sungai Basong, Tutong, Brunei Darussalam and PAPRSB, Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam.