Text and Data Mining valid from 2020-03-18
Received: 23 January 2020
Accepted: 9 March 2020
First Online: 18 March 2020
Ethics approval and consent to participate
: Not applicable
: Written informed consent was obtained from the patients. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.