[1] Univ Fed Rio Grande do Sul, Grad Program Med Sci, Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Cardiol Unit, HCPA, Porto Alegre, RS, Brazil
[3] Univ Fed Rio Grande do Sul, Grad Program Cardiol & Cardiovasc Sci, Porto Alegre, RS, Brazil
[4] Univ Fed Rio Grande do Sul, Grad Program Med Sci, Cardiol Unit, HCPA,Grad Program Cardiol & Cardiovasc Sci, Porto Alegre, RS, Brazil