Received: 13 December 2021
Accepted: 6 May 2022
First Online: 19 May 2022
: Ethical approval was obtained from the Ethical Review Committee of the School of Medicine, College of Medicine and Health Sciences, University of Gondar (456/04/2021), and a letter of permission was taken from Amhara Public Health Institute (1081/04/2021). It was confirmed that the study met the ethical and scientific standards outlined in national and international guidelines. Written informed consent was obtained from each study participant. Study participants that have ECG abnormalities were consulted with a cardiologist for further examinations.
: Not applicable.
: Patients were not formally involved in developing this specific study design.
: All authors declare that they have no conflict of interest.