Gould Paul A, Gula Lorne J, Skanes Allan C, Krahn Andrew D, Yee Raymond, Klein George J
Department of Medicine, Division of Cardiology, University of Western Ontario, London, Ontario N6A 5A5, Canada.
J Cardiovasc Electrophysiol. 2006 Apr;17(4):440-2. doi: 10.1111/j.1540-8167.2006.00369.x.