Funding for this research was provided by:
National Institute on Drug Abuse (2R01-DA029121)
Text and Data Mining valid from 2019-03-09
Received: 31 July 2018
Accepted: 5 February 2019
First Online: 9 March 2019
Compliance with ethical standards
: The authors declare no competing interests.
: This article does not contain any studies with human participants or animals performed by the author.