First Online: 5 September 2018
Ethics approval and consent to participate
: This study was approved by the Northwestern University Institutional Review Board. All subjects provided written informed consent prior to participation in the study.
: Informed consent sheets with optional consent for publication of images are available.
: Drs Kuiken and Hargrove have an interest in Coapt LLC; however no Coapt products were used in this research.
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