1. Department of Biomedical Sciences, Faculty of Sciences, University of Ngaoundere, Cameroon
2. Higher Institute of Sciences, Health Technics and Management of Garoua, Cameroon
3. University Institute of Technology, University of Ngaoundere, Cameroon
4. Faculty of Medicine and Biomedical Sciences of Garoua, Cameroon
5. Department of Radiology and Medical Imaging, Regional Hospital of Ngaoundere, Cameroon