Text and Data Mining valid from 2019-11-01
First Online: 9 November 2019
Compliance with Ethical Standards
: Mansueto Gomes Neto, André Rodrigues Durães, Lino Sergio Rocha Conceição, Leonardo Roever, Tong Liu<sup>7</sup> Gary Tse, Giuseppe Biondi-Zoccai, Ana Lucia Barbosa Goes, Lura Gonzalez Nogueira Alves, Øyvind Ellingsen, and Vitor Oliveira Carvalho declare they have no conflict of interest.
: This article does not contain any studies with human or animal subjects performed by any of the authors.