Authors: C.E.M. Griffiths, Kristian Reich, Mark Lebwohl, Peter van de Kerkhof, C. Paul, Alan Menter, Gregory S. Cameron, J. Erickson, Lu Zhang, Roberta J. Secrest, Susan Ball, Daniel Braun, Olawale Osuntokun, Michael Heffernan, Brian J. Nickoloff, Kim Papp - The Lancet 2015 cited by 831