Text and Data Mining valid from 2019-02-20
Accepted: 7 February 2019
First Online: 20 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The study was approved by the European Institute of Oncology Review Board and Ethics Committee, which reviewed and approved the study protocol, supervising the ongoing research.
: All participants gave written informed consent before participation.