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Authors
Barnthouse, Lawrence W. https://orcid.org/0000-0002-5131-8794
Stahl, Ralph G. Jr.
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Article History
Received: 29 August 2016
Accepted: 17 February 2017
First Online: 4 March 2017
Compliance with Ethical Standards
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: The opinions and information provided in this article are our own and do not represent official policies or positions of our affiliated organizations. LWB received no financial support in connection with this manuscript. RGS, Jr. is a full time employee of E.I. du Pont de Nemours and Co., Inc.
