1 Nuffield Department of Primary Care Health Sciences, University of Oxford Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, United Kingdom. Electronic address: sara.rotenberg@phc.ox.ac.uk.
2 Nuffield Department of Clinical Neurosciences, University of Oxford West Wing, John Radcliffe Hospital, Headley Way, Headington, Oxford OX3 9DU, United Kingdom.
3 Faculty of Law, University of Toronto, 78 Queens Park, Toronto, ON M5S 2C5, Canada.