Text and Data Mining valid from 2019-07-13
Received: 8 April 2019
Accepted: 1 July 2019
First Online: 13 July 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This work was partially supported by the Foundation for Research Support of the State of Minas Gerais—FAPEMIG (to PPMA and MMSS). This study consisted of review of medical records, and involved no more than minimal risks to subjects. The Institutional Review Board approved the protocol. All procedures performed in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.