Caturegli, Giorgio
Caturegli, Patrizio
Article History
Received: 8 November 2015
Accepted: 19 January 2016
First Online: 10 February 2016
Compliance with ethical standards
:
: None.
: Not applicable to this retrospective study.
: No informed consent was necessary as the study in fact was considered exempt from institutional review board evaluation on the basis of federal regulation 45 CFR 46.101(b) (research involving the study of existing data recorded in such a manner that subjects cannot be identified).