Funding for this research was provided by:
Italian Ministry of Health (Grant RO 06.17)
Received: 2 October 2017
Accepted: 17 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: The study was reviewed and approved by the Ethics Committee of the National Cancer Research Center, IRCCS Oncologico Giovanni Paolo II, Bari, Italy. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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