Text and Data Mining valid from 2019-12-01
Received: 17 June 2019
Accepted: 12 December 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: The study was approved by the ethical committee of CEROM Romagna, Italy (2299/2019/O/OssN, January 16, 2019).
: Not applicable.
: The authors declare that they have no competing interests