MA Crowther, W Ageno, T Schnurr, E Manfredi, K Kinnon, D Garcia and JD Douketis (2005) “Oral vitamin K produces a normal INR within 24 hours of its administration in most patients discontinuing warfarin”, Haematologica. Pavia, Italy, 90(1), pp. 137-139. doi: 10.3324/%x.