Text and Data Mining valid from 2020-02-17
Received: 24 July 2019
Accepted: 14 January 2020
First Online: 17 February 2020
Ethics approval and consent to participate
: The study was approved by the local ethics committee.Study ID: 4610 RRegistration-ID: 2014022179
: Not applicable
: The authors declare that they have no competing interests.