1. Department of Research, Medical Research Circle, Bukavu, DR Congo
2. Medical Institute, Sumy State University, Sumy, Ukraine
3. Catholic University of Bukavu, Bukavu, DR Congo
4. Free University of The Great Lakes Countries Lacs, Goma, DR Congo
5. University of Goma, Goma, DR Congo
6. College of Medical Sciences, Ahmadu Bello University Teaching Hospital (ABUTH), Shika, Kaduna State, Nigeria
7. Department of research, Oli Health Magazine Organization (OHMO), Kigali, Rwanda
8. Atal Bihari Vajpayee Institute of Medical Sciences and Dr. Ram Manohar Lohia Hospital, New Delhi, India