About the Author: Associate Professor Dr. Norhafiza Mat Lazim is a Consultant at the Department of Otorhinolaryngology-Head & Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia. She obtained her MBBS from The University of Queensland, Australia in 1999 and completed her Master of Medicine in Otorhinolaryngology - Head and Neck Surgery at the Universiti Sains Malaysia USM in 2012. Subsequently she obtained her Clinical Fellowship in Head and Neck Surgical Oncology from Antoni van Leeuwenhoek-Netherland Cancer Institute (NKIAVL), Amsterdam, Netherlands in 2014 and at the VUMC, Free University Hospital, in Amsterdam in 2015. In addition, she had her clinical training at the Sydney Head & Neck Cancer Institute, Chris O'Brien Lifehouse Australia, in 2019. Her main interest is Head and Neck Surgical Oncology, and she has received several national international and grants on head and neck diseases and tumors. She has published multiple papers in peer-reviewedjournals and several book chapters and books. Additionally, she is a reviewer for multiple international journals and also serves as an editorial board member to numerous international journals. She is a member of the American Head and Neck Society (AHNS), European Head and Neck Society (EHNS), Asian Head and Neck Oncology (ASHNO), American Thyroid Association (ATA), British Association Head and Neck Oncology (BAHNO), International Academy of Oral Oncology (IAOO) and Australian Institute of Medical Scientist (AIMS).

Associate Professor Dr. Zul Izhar Mohd. Ismail is a Senior Lecturer in the Department of Anatomy, School of Medical Sciences, Universiti Sains Malaysia (USM), Kubang Kerian, Kelantan, Malaysia. He received his MBBS degree from The University of Queensland, Brisbane, Australia in 1999. He later obtained his Master of Philosophy (MPhil) degree in the field of Biomedical Science from the same university in 2005. He has been a lecturer of Anatomy in USM since year 2005, teaching Anatomy to both undergraduate and postgraduate medical programs. He had held several academic and administrative positions during the tenure of his service in USM. He is a member of the Malaysian Medical Association and lifetime member of the Malaysian Anatomical Society. He has written numerous publications in both local and international journals and presented his research findings in scientific conferences. As an anatomist, he has a particular interest in histomorphometry, neurotoxicology, radiological anatomy, clinical anatomy and anatomy education.

Professor Dr Baharudin Abdullah is a Senior Consultant in the Department of Otorhinolaryngology - Head & Neck Surgery in Universiti Sains Malaysia. He graduated with MBBS of Medicine and Surgery from Universiti Malaya (1994) and Master of Medicine (MMED) in Otorhinolaryngology - Head & Neck Surgery from Universiti Sains Malaysia (2002).
He was an Honorary Visiting Scholar at Chinese University of Hong Kong, Asian Surgical Association Clinical Fellow at University of Hong Kong and Fellow in Rhinology and Endoscopic Sinus Surgery at University of Graz, Austria.
He is on the editorial board of reputable medical journals. He has published widely in allergy, rhinology and head and neck surgery in several international and national journals and presented many scientific studies and papers both at the national and international level. He has contributed significantly to the successes of symposiums and workshops in Universiti Sains Malaysia (USM), and other symposiums, congresses and workshops both at national and international level. He is the Past President of Malaysian Society of Allergy and Immunology (MSAI).