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Authors
Keefer, Kimberly
Bender, Regis
Liao, Jason
Sivik, Jeffrey
Van de Louw, Andry https://orcid.org/0000-0003-2260-2005
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Article History
Received: 8 May 2018
Accepted: 17 July 2018
First Online: 21 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required. This study was approved by the Pennsylvania State University Institutional Review Board (IRB number 5590), and informed consent was waived due to the retrospective design of the data collection.
