1. Hepatopancreaticobiliary Division, Department of Surgery,Universiti Sains Malaysia, Kelantan, Malaysia
2. Department of Surgery, Universiti Sains Malaysia, Kelantan, Malaysia
3. Hospital Universiti Sains Malaysia, Kelantan, Malaysia
4. Advanced Medical and Dental Institue, Universiti Sains Malaysia, Kepala Batas, Pulau Pinang, Malaysia