Received: 22 November 2020
Accepted: 12 April 2021
First Online: 23 April 2021
: The study protocol was reviewed from Research Ethical Committee in School of Biomedical and Laboratory Sciences, University of Gondar. The study was carried out after obtaining the ethical clearance. Since the age of all the study participants were 18 and above in years, written informed consent was obtained from all study participants. Confidentiality was secured by using anonymous data collection tools and the data analysis was not also included any identification of the study participants. In addition, the participants were informed on they have a full right to withdraw from the study at any time if they have any inconvenience. We can confirm that all methods were performed in accordance with the relevant guidelines and regulations of research ethics.
: Not applicable.
: The authors declare that they have no competing interests.