1. Department of Neuroscience, King Fahad Specialist Hospital in Dammam, Saudi Arabia (F.A.).
2. Division of Neurology, Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa (Y.G.).
3. Malawi-Liverpool Wellcome Trust Clinical Research Program, Kamuzu University of Health Sciences (KUHeS), Malawi (Y.G.).
4. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD (D.S.).
5. University Teaching Hospital, Lusaka, Zambia (D.S.).