Affiliation: | 1. Immunology Unit, Department of Pathology, Faculty of Medicine and Health Sciences, University Putra Malaysia, Selangor, Malaysia;2. Department of Medicine, Faculty of Medicine and Health Sciences, University Putra Malaysia, Selangor, Malaysia;3. Department of Otolaryngology, Serdang Hospital, Selangor, Malaysia;4. Pantai Hospital, Kuala Lumpur, Malaysia;5. Otolaryngology Unit, Department of Surgery, Faculty of Medicine and Health Sciences, University Putra Malaysia, Selangor, Malaysia |