University of Oxford - Nuffield Department of Clinical Neurosciences, University College London - Department of Genetics, Evolution and Environment, The Open University - School of Mathematics and Statistics, University College London, University of Glasgow - Spinal Cord Research Group, University of Glasgow - Spinal Cord Research Group, University of Glasgow - Spinal Cord Research Group, University of Glasgow - Institute of Neuroscience and Psychology, affiliation not provided to SSRN, McGill University, University of Oxford, University of Oxford - Department of Clinical Neurosciences, University of Zurich - Institute of Pharmacology and Toxicology, University of Oxford, The Open University - School of Mathematics and Statistics, Université Libre de Bruxelles (ULB) - Faculty of Medicine, University of Oxford, Université Libre de Bruxelles (ULB) - Faculty of Medicine, Ecole Doctorale Aix-Marseille Université - CNRS, EFS, ADES, Universidad Peruana Cayetano Heredia, Facultad de Ciencias y Filosofıa, Laboratorios de Investigacion y Desarrollo, Universidad Peruana Cayetano Heredia, Facultad de Ciencias y Filosofıa, Laboratorios de Investigacion y Desarrollo, Universidad de Tarapaca - Instituto de Alta Investigacion, Universidad de Antioquia - GENMOL (Genetica Molecular), ETH Zürich - Institute of Pharmaceutical Sciences, McGill University, University of Glasgow, University College London, Fudan University - Human Phenome Institute and University of Oxford - Nuffield Department of Clinical Neurosciences