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This work was supported by the National Institute of General Medical Sciences of the National Institutes of Health [P20GM130461] and the Rural Drug Addiction Research Center at the University of Nebraska-Lincoln. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or the University of Nebraska.

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This work was supported by the National Institute of General Medical Sciences of the National Institutes of Health [P20GM130461]. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Data access was provided by the Rural Drug Addiction Research Center at the University of Nebraska-Lincoln.