<p>Habtamu Y. Gedamu<strong>1*</strong>, T. Y. Birhan<strong>1</strong>, M. F. Andargie<strong>1,</strong> E. B.Tadesse<strong>2</strong>,N. M. Derseh<strong>1</strong></p><p><strong>Author's Affiliation:</strong></p><p><strong>1</strong>Department of Epidemiology and Biostatistics, Institute of Public Health, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia,</p><p>2CDC/GHC/DGHT, Addis Ababa, Ethiopia</p><p><strong>First author email address:</strong></p><p>Habtamu Yingesu Gedamu.<a href="mailto:habtamuyingesu55@gmail.com">habtamuyingesu55@gmail.com</a>&nbsp;</p>