Funding for this research was provided by:
Division of Cancer Epidemiology and Genetics, National Cancer Institute
Text and Data Mining valid from 2018-08-02
Received: 16 April 2018
Accepted: 17 July 2018
First Online: 2 August 2018
Compliance with ethical standards
: The authors have no conflicts to disclose.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.