1. Department of Otolaryngology, Head and Neck Surgery, Hospital Al-Sultan Abdullah Universiti Teknologi MARA (UiTM), Puncak Alam, Selangor, Malaysia
2. Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh, Selangor, Malaysia