1. Department of Public Health, Arba Minch College of Health Sciences, P.O. Box 155, Arba Minch, Ethiopia
2. Department of Nutrition and Dietetics, Faculty of Public Health, Institute of Health Sciences, Jimma University, P.O. Box 378, Jimma, Ethiopia
3. School of Public Health, College of Medicine and Health Sciences, Arba Minch University, P.O. Box 021, Arba Minch, Ethiopia