| Affiliation: | 1. Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA;2. Department of Internal Medicine, Nishtar Medical College, Multan, Pakistan;3. Department of Internal Medicine, John H. Stroger Jr. Hospital of Cook Country, Chicago, Illinois, USA;4. Section of Electrophysiology, Division of Cardiology, University of California San Diego, La Jolla, California, USA;5. Electrophysiology Section, Kansas City Heart Rhythm Institute, Overland Park, Kansas, USA |
