Text and Data Mining valid from 2019-12-01
Received: 20 May 2019
Accepted: 9 December 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: The original project from where the data were obtained passed through the institutional ethics committee and was approved.
: Data are a secondary analysis of institutional data. No consent for publication was needed.
: The authors declare that they have no competing interests.