Funding for this research was provided by:
Fundación Hospital Provincial de Castellón
Received: 17 December 2018
Accepted: 23 May 2019
First Online: 6 June 2019
Ethics approval and consent to participate
: The patients’ right to data confidentiality and privacy were specifically preserved and bioethical approval for the study was obtained from the cancer registry in the Castellon province (Spain). The study was approved by the institutional review board of the Hospital General de Castellon (PIC: 2013/2/CIR). All participating patients provided their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.