Document is current

Article History

Received: 3 July 2020

Accepted: 8 December 2020

First Online: 14 December 2020

Ethics approval and consent to participate

: All the data were retrieved from a published work (Perini et al. ), where it is stated: “Neither ethics committee approval, nor informed consent were required as all collected data are fully anonymized, there was no contact with patients and/or their families and no interventions or changes to treatment and management were made, in accordance with institutional guidelines.”

: No individual person’s data where used in this work.

: No competing interests to declare.