McManus Richard J, Mant Jonathan
Department of Primary Care Health Sciences, University of Oxford, Oxford OX1 2ET, UK.
Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.
Lancet. 2012 Mar 10;379(9819):872-873. doi: 10.1016/S0140-6736(11)61926-0. Epub 2012 Jan 30.