Funding for this research was provided by:
American Cancer Society (MRSG-13-220-01 – MPC)
Text and Data Mining valid from 2018-04-20
Received: 22 September 2017
Accepted: 11 April 2018
First Online: 20 April 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.