1. Cardiology Division, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.
2. Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.
3. Functional Genomics and Systems Biology Group, IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
4. Heart Failure Research Centre, Department of Cardiology, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, Netherlands.
5. National Cardiovascular Center, Suita 565-8565, Japan.
6. Gentofte University Hospital, DK 2820 Copenhagen, Denmark.
7. Danish National Research Foundation Center for Cardiac Arrhythmias, DK 2200 Copenhagen, Denmark.
8. Department of Clinical Genetics, Academic Medical Centre, University of Amsterdam, 1105 AZ, Amsterdam, Netherlands.