From the Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia (E.J.E., A.G., C.Z., C.B.); the University of Denver Sturm College of Law, Denver (G.P.); the Division of Clinical Public Health, Dalla Lana School of Public Health, University of Toronto, Toronto (R.U.), and the School of Health Studies, Western University, London, ON (M.S.) - both in Canada; the Preventive Medicine Department, Federal University of São Paulo, São Paulo (B.T.); the Wellcome Centre of Ethics and Humanities, the Ethox Centre, University of Oxford, Oxford, United Kingdom (M.P.); and the Department of Emergency Medicine, George Washington University Hospital, Washington, DC (J.P.P.).