1. College of Medical Sciences, Ahmadu Bello University Teaching Hospital, Shika, Kaduna State, Nigeria
2. Department of Research and Education, Oli Health Magazine Organization, Kigali, Rwanda
3. Faculty of Science, Ibrahim Badamasi Babangida University, Lapai, Niger State
4. Faculty of Science, College of Health Sciences and Technology, Jega, Nigeria
5. Faculty of Preventive Medicine, IM Sechenov University, Moscow, Russia
6. Faculty of Medicine, Official University of Bukavu, Bukavu
7. Department of Research, Medical Research Circle, Bukavu, Democratic Republic of Congo