Funding for this research was provided by:
ACEPAIN, Diputación de Albacete, ISCIII and CRIS Cancer
Text and Data Mining valid from 2020-01-31
Received: 30 October 2019
Accepted: 21 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: All authors.
: The authors declare that they have no competing interests.