Funding for this research was provided by:
National Institute on Drug Abuse (R21DA044378, U01DA036225, U01DA036226, U01DA036176, U01DA036233, U01DA036224, U01DA036158, U01DA036221)
Text and Data Mining valid from 2020-01-11
First Online: 11 January 2020
Compliance with Ethical Standards
: GAA serves on the Editorial Board for Administration and Policy in Mental Health and Mental Health Services Research; all decisions on this paper were made by another editor. The authors declare that they have no other competing interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional review boards for each of the seven research institutions and the coordinating center and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.