Received: 12 July 2020
Accepted: 22 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: This study was approved by the Local Ethics Committee of Area Vasta Emilia Nord (no. 2020/0045199).
: Since not all patients were able to give their informed consent, the Ethics Committee waived this requirement. Informed consent was sought from all surviving patients as soon as they regained their mental competence.
: The authors declare that there are no conflicts of interest regarding the publication of this article.