Received: 18 June 2019
Accepted: 25 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: Authorization was obtained by the Institutional Review Board ASST Lecco teaching Hospital. No specific number of authorisation is given for the use of routinely collected administrative data, as the ones used for this study. An informed consent was signed by each patient at the admission to the hospital for the use of sociodemographic, clinical, and administrative data for epidemiological purposes. Data have been anonymised before use.
: Not applicable.
: The authors declare that they have no competing interests.