Funding for this research was provided by:
Text and Data Mining valid from 2020-02-24
Received: 27 November 2019
Accepted: 16 January 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of Hospital Israelita Albert Einstein (reference number 58175716.9.0000.0071) and informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.