Received: 3 December 2018
Accepted: 16 August 2019
First Online: 29 August 2019
Ethics approval and consent to participate
: The Ethical Committee of the European Institute of Oncology approved the study and informed consent was obtained by all patients.
: No data of an individual patients included in this study are contained in this manuscript, hence, no consent for publication was needed.
: The authors declare that they have no competing interests.