Authors' reply: Systematic review of the efficacy of cilostazol, naftidrofuryl oxalate and pentoxifylline for the treatment of intermittent claudication (Br J Surg 2012; 99: 1630–1638). Issue 13 (December 2013) - Stevens, J.W.; Simpson, E.; Harnan, S.; Squires, H.; Meng, Y.; Thomas, S.; Michaels, J.; Stansby, G.