Funding for this research was provided by:
National Institute on Drug Abuse (P30DA040500, R01DA035280, R01DA032098, R01DA030771)
Accepted: 19 February 2021
First Online: 8 April 2021
Ethics approval and consent to participate
: This study was completed under a data sharing agreement with the STTR Data Coordination Center in which all authors agreed to respect and protect the privacy of the original participants. Each of the STTR studies received its own human subjects IRB approvals and obtained consent from individuals for participation. The University of Washington Human Subjects Division (HSD) reviewed the project (EJ-46474) and determined that these de-identified data were not human subjects data and provided a waiver stating the same.
: Not applicable.
: SMM consulted for Sandoz Inc. on an economic model unrelated to this work. HMC has received grant funding from ViiV Healthcare unrelated to this work. All other authors declare that they have no competing interests.