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Authors
Coppola, Silvia
Caccioppola, Alessio
Froio, Sara
Ferrari, Erica
Gotti, Miriam
Formenti, Paolo
Chiumello, Davide http://orcid.org/0000-0001-9260-3930
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Article History
Received: 1 May 2019
Accepted: 13 September 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The datasets used for the current study came from seven published studies. The institutional review board of each hospital (Ethics Committee Milan, zones 1 and 2) approved each study, and written consent was obtained according to the regulations applied in each Institution.
: Not applicable
: The authors declare that they have no competing interests.
