Funding for this research was provided by:
National Institute on Drug Abuse (R01DA047820, R01DA038632, R01DA047063, R03DA039745)
Received: 4 June 2020
Accepted: 2 November 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: The study was approved by the committee of the Human Research Subject Protection at Yale University and the Institutional Research Board Committee of the Connecticut Veteran Healthcare System. De-identifiable samples were from Women’s Interagency HIV Study cohort. All participants provided written consents.
: The authors declare that they have no competing interests.