Funding for this research was provided by:
National Institute on Drug Abuse (DA039393)
National Cancer Institute (P50-CA-143187)
American Cancer Society (IRG-78-002-31)
Received: 6 July 2016
Accepted: 2 November 2016
First Online: 14 November 2016
Conflict of interest
: The authors declare that they have no conflict of interest.
: HDS was responsible for the study concept and design, supervised and contributed to the acquisition of data, analyzed the data, and drafted the manuscript. JJM contributed to the acquisition of animal data, analyzed the data, and helped draft the manuscript. KS-N also provided critical revision of the manuscript for important intellectual content. All authors critically reviewed content and approved the final version for publication.