Funding for this research was provided by:
Ministero della Salute
Received: 13 April 2017
Accepted: 16 May 2018
First Online: 4 June 2018
Ethics approval and consent to participate
: The study obtained approval from the Ethical Committee of ISS (CE-ISS10/288) and from the Scientific Committee of the Italian Arthroplasty Registry project (RIAP). All participants gave written, fully-informed consent to participate in the study and for their data to be reported anonymously.
: The authors declare that they have no competing interests.
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