. Camm, M. Malik, J. T. Bigger, G. Breithardt, S. Cerutti, R. J. Cohen, P. Coumel, E .L. Fallen, H. L. Kennedy, Kleiger, F. Lombardi, A. Malliani, A. J. Moss, J. N. Rottman, G. Schmidt, P. J. Schwartz, and D. H. Singer (Task Force of the European Society of Cardiology and the North American Society of El