1688-0420 1688-0420 S1688-04202020000200271 10.29277/cardio.35.2.19 00 00 2020 00 00 2020 35 2 271 275 1 2007 334 0-a 2 1981 124 5 5 555-8 3 2007 31 145-52 4 2020 5 2020