1 Department of Biomedical Sciences, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
2 Department of Molecular Biology, Institute of Endemic Diseases, Khartoum, Sudan.
3 Faculty of Pharmacy University of Gezira, Wad Medani, Sudan.
4 Systems Biology Ireland, School of Medicine and Medical Science, University College Dublin, Dublin, Ireland.
5 Faculty of Medicine, University of Fianarantsoa, Fianarantsoa, Madagascar.
6 Neurology Unit, Department of Medicine, College of Medicine, University of Lagos, Lagos, Nigeria.
7 Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.
8 Basic Medical Science Department, Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan, Malaysia.
10 Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom.
11 Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.
12 Centre for Preventive Neurology, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom.
13 Department of Biomedical Sciences, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences and South African Medical Research Council/Stellenbosch University Genomics of Brain Disorders Research Unit, Stellenbosch University, Cape Town, South Africa.
14 Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas (CSIC)/Universidad de Sevilla, Seville, Spain.