Fowkes FGR, Murray GD, Butcher I, Heald CL, Lee RJ, Chambless LE, Folsom AR, Hirsch AT, Dramaix M, deBacker G, et al. Ankle brachial index combined with Framingham Risk Score to predict cardiovascular events and mortality: a meta-analysis. JAMA. 2008  ;300(2):197-208.

Fowkes FGR, Murray GD, Butcher I, Folsom AR, Hirsch AT, Couper DJ, deBacker G, Kornitzer M, Newman AB, Sutton-Tyrrell KC, et al. Development and validation of an ankle brachial index risk model for the prediction of cardiovascular events. Eur J Prev Cardiol. 2014  ;21(3):310-20.