Funding for this research was provided by:
U.S. Department of Health & Human Services | NIH | National Cancer Institute (R01CA098663, R01CA058420, UM1CA164974)
Received: 25 May 2018
Revised: 18 July 2018
Accepted: 13 August 2018
First Online: 22 August 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The BWHS was approved by the institutional review board of Boston University (Boston, MA).
: All study subjects provided written informed consent for use of their saliva samples.