1. Department of Communication Pathology, University of Pretoria, Pretoria, South Africa
2. Callier Center for Communication Disorders, School of Behavioral and Brain Sciences, University of Texas at Dallas,
USA
3. Maternal and Child Health Unit, Institute of Child Health and Primary Care, College of Medicine, University of Lagos,
Lagos, Nigeria
4. Institute of Child Health and Great Ormond Street Hospital for Children NHS Trust, University CollegeLondon, UK
5. Department of Telehealth, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, South Africa