Received: 6 January 2021
Accepted: 26 February 2021
First Online: 8 April 2021
: This study was approved by the Modena University Hospital Institutional Ethics Committee with the following approval number: AOU 0025972/19 on the 25/09/2019. No written informed consent was provided to patients as all data were analysed anonymously after a de-identification process.
: Not applicable.
: The authors declare that they have no competing interests.