Received: 13 September 2018
Accepted: 14 May 2019
First Online: 24 May 2019
Ethics approval and consent to participate
: Administrative permission was required for accessing raw data used in the study. This permission was granted by the medical director office of Halibet National Referral and Teaching Hospital, which is responsible for ethical approval of researches done in the hospital. The hospital doesn’t have a formal ethics review committee and all ethical reviews of researches conducted in the hospital are done by the medical director office.
: Not applicable.
: The authors declare that they have no competing interests.
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