Received: 14 November 2017
Accepted: 1 May 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: The study was approved by the Johns Hopkins University Institutional Review Board, Baltimore, MD. The study was performed in accordance with the Declaration of Helsinki.
: Informed consent was obtained from the patient involved in the study.
: The authors declare that they have no competing interests.
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