Abraha Teklehaymanot Huluf, Teferra Alemayehu Shimeka, Gelagay Abebaw Addis
Department of Public Health, College of Health Sciences, Aksum University, Aksum, Ethiopia.
Department of Epidemiology and Biostatistics, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
Epidemiol Health. 2017 May 10;39:e2017019r. doi: 10.4178/epih.e2017019r. eCollection 2017.