1. Department of Otorhinolaryngology‐Head and Neck Surgery School of Medical Sciences, Universiti Sains Malaysia Kubang Kerian Kelantan Malaysia
2. Otorhinolaryngology‐Head and Neck Surgery Specialist Clinic Hospital Universiti Sains Malaysia Kubang Kerian Kelantan Malaysia
3. Department of Medical Microbiology and Parasitology School of Medical Sciences, Universiti Sains Malaysia Kubang Kerian Kelantan Malaysia
4. School of Dental Sciences Universiti Sains Malaysia Kubang Kerian Kelantan Malaysia