1. From the Helmsley Electrophysiology Center, Mount Sinai School of Medicine, New York, NY (V.Y.R., M.A.M., S.R.D., J.S.K.); Department of Cardiology, Academic Medical Center, University of Amsterdam, The Netherlands (R.E.K., J.R.d.G., A.A.M.W.); Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany (J.S.); Cardiology Department, Homolka Hospital, Prague, Czech Republic (J.P., J.S., L.S., P.N.); Nanostim, Inc, Sunnyvale, CA (P.J., A.O.); Department of Cardiology, Institute of Clinical and...