Authors: Alan K. Burnett, Nigel H. Russell, Robert K. Hills, David Bowen, Jonathan Kell, Steven Knapper, Yvonne G Morgan, Jennie Lok, Angela Grech, Gail Jones, Asim Khwaja, Lone S. Friis, Mary Frances McMullin, Ann Hunter, Richard E Clark, David Grimwade - The Lancet 2015 cited by 543