1. Faculty of Health Sciences, Jalan Raja Muda Abdul Aziz, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
2. Faculty of Health Sciences, Centre for Healthy Ageing and Wellness (H-CARE), Speech Sciences Programme, Jalan Raja Muda Abdul Aziz, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
3. Apara Autism Center, Sugar Land, TX, USA
4. Dept of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia (IIUM), Kuantan, Malaysia
5. Communication Sciences and Disorders, College of Health and Human Services, Rockhurst University, Kansas City, MO, USA