1. Center for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
2. Enteric Diseases and Vaccines Research Unit, Centre for Infectious Disease Research in Zambia (CIDRZ), Lusaka, Zambia
3. Wachemo University, Hossana, Ethiopia
4. Kotebe Metropolitan University, Addis Ababa, Ethiopia
5. University of Gondar, Gondar, Ethiopia