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Authors
Gurrera, Ronald J. https://orcid.org/0000-0001-6648-4704
Grosso, Darryl
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Article History
Received: 29 March 2020
Accepted: 11 December 2020
First Online: 2 January 2021
Compliance with Ethical Standards
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: The authors report no conflicts of interest. Both authors certify their responsibility for all aspects of this work and manuscript.
: This work was conducted retrospectively from data obtained for clinical purposes. We consulted extensively with the IRB of the VA Boston Healthcare System, which determined that it did not need ethical approval. Official authorization to proceed without ethical approval was granted by the IRB of the VA Boston Healthcare System.
