Brunini, Francesca http://orcid.org/0000-0002-9457-5344
Zaina, Barbara
Gianfreda, Davide
Ossola, Wally
Giani, Marisa
Fedele, Luigi
Messa, Piergiorgio
Moroni, Gabriella
Article History
Received: 29 July 2017
Accepted: 12 February 2018
First Online: 28 February 2018
Compliance with ethical standards
:
: The authors report no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the IRCCS Ca’ Granda Ospedale Maggiore Policlinico ethics committee-Milano area B- and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.
: Data were collected retrospectively in an anonymous database without interfering with the best clinical practice at any time during patients’ follow-up. Due to the retrospective nature of the study, neither written nor verbal informed consent was necessary, according to the ethical standards of the institutional Ethics Committee.