Article History
Received: 2 February 2018
Accepted: 5 December 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: This study was performed in accordance with the Declaration of Helsinki and was approved by the ethical committee of the National Defense Medical College. Informed consent was obtained from all subjects after the aims and nature of the study were explained to the participants.
: Not applicable.
: The authors declare that they have no competing interests.
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