1. Communication and Swallowing Disorders Department, King Fahad Medical City, Riyadh, Saudi Arabia.
2. Manchester Centre for Audiology & Deafness, Division of Human Communication, Development and Hearing, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
3. Department of Language and Communication Sciences, School of Health and Psychological Sciences, City, University of London, London, United Kingdom.