Funding for this research was provided by:
Text and Data Mining valid from 2020-02-10
Received: 26 September 2019
Accepted: 6 January 2020
First Online: 10 February 2020
Ethical approval and consent to participate
: Prior to commencing this study, the protocol was approved by the Research Ethics Committee at UNOPAR (University of North Parana) (Opinion no. 846.387; CAAE: 33345114.2.0000.0108).
: Consent was obtained from the patient prior to the study commencing, or in the case of children, from their parent or legal guardian.
: The authors declare that they have no competing interests.