Funding for this research was provided by:
Compagnia di San Paolo (CSTO169141)
Received: 17 September 2020
Accepted: 18 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: A specific request was made to local Ethical Committee <i>(Comitato Etico Interaziendale A.O.U. San Luigi Gonzaga di Orbassano, Italy)</i> in order to have access to hospital discharge registers of each involved center; the protocol was reviewed and approved by the Ethical committee (file number 117/2017).
: Not applicable.
: All the authors declare that there are not any actual or potential conflict of interest, including any financial, personal, or other relationship with other people or organization since the beginning of the submitted work, that could inappropriately influence, or be perceived to influence, their work.