Received: 18 November 2021
Accepted: 20 January 2022
First Online: 2 February 2022
: This study was approved by the Ethical Committe of the Fondazione IRCCS Ca’ Granda, Ospedale Maggiore, Milan, Italy (protocol no. 573/15).Informed consent was obtained from all the patients included in the study. The ethical guidance for the study was in accordance with the World Medical Association Declaration of Helsinki of 1975, revised in Tokyo 2004.
: Not applicable.
: The authors declare that they have no competing interests.