Received: 19 February 2020
Accepted: 27 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: The study was approved by the Clinical Research Ethics Committee of the Hospital Universitari de Bellvitge (Barcelona, Spain; ethic approval number PR241/16).
: This manuscript does not contain any individual person’s data in any form. Each patient was identified by a unique alphanumeric identification code and all data were made anonymous and analysed as aggregates.
: The authors declare that they have no conflict of interest.