Received: 18 October 2018
Accepted: 15 January 2019
First Online: 18 January 2019
Ethics approval and consent to participate
: The Institutional Review Board (IRB) of the American University of Beirut Medical Center has approved this research. Due to the retrospective nature of data collection, a waiver of written consent was granted.
: Not applicable.
: The authors declare that they have no competing interests.
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