Epstein Andrew E
Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Tinsley Harrison Tower 321L, 1530 3rd Avenue South, Birmingham, AL 35294-0006, USA.
J Cardiovasc Electrophysiol. 2003 Jul;14(7):682-4. doi: 10.1046/j.1540-8167.2003.03190.x.