Received: 6 November 2018
Accepted: 20 December 2018
First Online: 30 January 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the High Institute of Public Health. All methods were performed in accordance with the International Guidelines for Research Ethics. Verbal consent was obtained from each study participant after explanation of the purpose and benefits of the study. Verbal consent was used as the study was based on records without taking any biological samples or giving any investigational medicine, so it did not introduce more than minimal risk to the study patients. Anonymity and confidentiality of participants were maintained.
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