1. Department of Cardiovascular Diseases, Mayo Clinic, 200 First St SW, Rochester, MN, USA
2. Davidai Arrhythmia Center, Leviev Heart Center, Sheba Medical Center, Tel Hashomer and Tel Aviv University, Emek HaEla St 1, Ramat Gan, Israel
3. Department of Health Sciences Research, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, USA