1. Department of Health Studies, College of Human Science, University of South Africa, Pretoria, South Africa
2. College of Health Science, Addis Ababa University, Addis Ababa, Ethiopia
3. School of Public Health, Addis Ababa University College of Health Sciences, Addis Ababa, Ethiopia
4. Save the Children International, Addis Ababa, Ethiopia
5. Nutrition Section, United Nations Children’s Fund (UNICEF), Addis Ababa, Ethiopia
6. Division of Epidemiology and Prevention: Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA