Received: 3 August 2018
Accepted: 28 March 2019
First Online: 4 April 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Armed Forces Medical Command (AFMC-17056-IRB-17-054). Informed consent was omitted because the present study was performed by retrospective manner.
: Not applicable.
: The authors declare that they have no competing interests.
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