Received: 23 May 2019
Accepted: 13 September 2019
First Online: 18 December 2019
Ethics approval and consent to participate
: Local ethics committee of LISOD Oncologic Hospital issued a favourable report for the realisation of current study, since it has considered that it conforms to the essential ethical principles and with the deontological criteria of this institution. Informed consent by patients was waived by the ethics committee.
: Waived by the ethics committee.
: The author declares that there are no competing interests.