1. School of Nuclear and Allied Sciences, University of Ghana, PO Box AE 1, Atomic, Accra, Ghana
2. Department of Physics, Faculty of Science, University of Douala, PO Box , Douala, Cameroon
3. Radiological and Medical Science Research Institute, Ghana Atomic Energy Commission, PO Box LG80, Legon, Accra, Ghana
4. National Radiation Protection Agency (NRPA), PO Box , Yaoundé, Cameroon
5. Nuclear Regulatory Authority, PO Box AE 50 Atomic Energy, Kwabenya, Accra, Ghana
6. Department of Radiography, School of Biomedical & Allied Health Sciences, University of Ghana, PO Box KB 143, Korle-Bu campus, Accra, Ghana