Received: 25 June 2020
Accepted: 27 October 2020
First Online: 7 November 2020
Ethics approval and consent to participate
: This observational analysis received approval by our local Ethics committee (Comitato Etico Milano Area 1) in 01/17/2019 with number of protocol: 57183/2018. Written informed consent was obtained for enrolled patients.
: Not applicable.
: The authors declare no conflicts of interest. Giulia Marchetti is a member of the Editorial Board of BMC Infectious Diseases.