Williams Bryan, Poulter Neil R, Brown Morris J, Davis Mark, McInnes Gordon T, Potter John F, Sever Peter S, Thom Simon McG
Department of Cardiovascular Sciences, University of Leicester, Clinical Sciences Building, Leicester Royal Infirmary, Leicester.
BMJ. 2004 Mar 13;328(7440):634-40. doi: 10.1136/bmj.328.7440.634.