Received: 22 May 2020
Accepted: 23 February 2021
First Online: 18 March 2021
: The present study was approved by the Institutional Review Board (Comitato Etico A.O.U. Città della Salute e della Scienza di Torino, reference code: PRCA.P904.G001) and was conducted in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Written informed consent was obtained from all participants.
: All the authors gave their consent to publish this final form of the manuscript.
: The authors declare no conflicts of interest.