1. Department of Public Health, Faculty of Health Sciences University of Venda Thohoyandou Limpopo Province South Africa
2. Department of Psychology, Faculty of Health Sciences University of Venda Thohoyandou Limpopo Province South Africa
3. School of Pharmacy University of Lincoln, Joseph Banks Laboratories Lincolnshire UK
4. Department of Psychology, Faculty of Humanities University of Johannesburg Johannesburg South Africa
5. Department of Advanced Nursing Sciences, Faculty of Health Sciences University of Venda Thohoyandou Limpopo Province South Africa
6. Pediatric Neurology and Muscular Diseases Unit IRCCS Istituto Giannina Gaslini Genoa Italy
7. Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health University of Genova Genoa Italy