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Article History

Received: 26 August 2019

Revised: 21 October 2019

Accepted: 28 October 2019

First Online: 3 January 2020

Compliance with Ethical Standards

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: Dr. Sims has received research support from the National Institute on Drug Abuse. Authors Gray and Oh declare that they have no conflicts of interest.

: Ethical Approval—Retrospective StudiesAnalysis of this study—a retrospective analysis of secondary data—was approved by the institutional review board at University of Alabama at Birmingham.

: This article does not contain any studies with animals performed by any of the authors.