Funding for this research was provided by:
Cancer Research UK (C28070/A19985)
Text and Data Mining valid from 2018-04-16
Received: 27 January 2018
Accepted: 2 April 2018
First Online: 16 April 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.