1. Postgraduate Program in Cardiology & Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), 2400, Ramiro Barcelos Street, Porto Alegre 90035 002, Brazil
2. Department of Cardiovascular Surgery, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), 6690, Ipiranga Avenue, Porto Alegre 90619 900, Brazil
3. Department of Cardiac Surgery, University Hospital of Zurich, University Heart Center Zurich, 100, Rämistrasse, Zurich 8091, Switzerland
4. Department of Cardiology, Hospital Nossa Senhora da Conceição, Porto Alegre, 596, Francisco Trein Avenue, Porto Alegre 91350 200, Brazil
5. Heart Rhythm Center, Centro Cardiologico Monzino IRCCS, 4, Via Carlo Parea, Milan 20138, Italy
6. Department of Cardiovascular Surgery, Hospital de Clínicas de Porto Alegre (HCPA), 2340, Ramiro Barcelos Street, Porto Alegre 90035 903, Brazil
7. Department of Cardiology, Hospital de Clínicas de Porto Alegre (HCPA), 2350, Ramiro Barcelos Street, Porto Alegre 90035 903, Brazil