Franklin B A, George P, Henry R, Gordon S, Timmis G C, O'Neill W W
Department of Medicine, Division of Cardiology (Cardiac Rehabilitation), William Beaumont Hospital, Royal Oak, Michigan, USA.
Am J Cardiol. 2001 Jun 1;87(11):1282-3. doi: 10.1016/s0002-9149(01)01520-x.