Funding for this research was provided by:
National Institute on Drug Abuse (R01-DA031815)
Text and Data Mining valid from 2020-01-11
First Online: 11 January 2020
Compliance with Ethical Standards
: This work was supported by the NIH, National Institute on Drug Abuse. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institute on Drug Abuse or the National Institutes of Health. The study sponsor had no role in study design; collection, analysis, or interpretation of data; writing the report; or the decision to submit the report for publication. None of the authors have institutional or corporate affiliations that conflict with this study, and no financial disclosures were reported by the authors of this paper.