1. Renal Division; Department of Medicine; Universidade Federal Fluminense; Niterói RJ Brazil
2. Department of Cardiology; Shanghai First People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
3. Abteilung Elektrophysiologie; Herzzentrum; Universität Leipzig; Leipzig Sachsen Germany
4. Hospital Regional Darcy Vargas; Rio Bonito RJ Brazil