1. Department of Otorhinolaryngology – Head & Neck Surgery, School of Medical Sciences, University Sains Malaysia, Kuala Lampur , Malaysia
2. Department of Otorhinolaryngology – Head & Neck Surgery, Hospital Kuala Lumpur , Jalan Pahang, Malaysia
3. Department of Radiology, School of Medical Sciences, University Sains Malaysia, Kuala Lumpur , Malaysia
4. Department of Otolaryngology – Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan , Malaysia