1. University of Cape Coast, School of Agriculture and Physical Sciences Faculty of Physical Sciences, Department of Physics, Cape coast, Ghana
2. University of Ghana Medical School, Department of Radiology, Korle-Bu Teaching Hospital, Accra Ghana
3. Graduate School of Nuclear and Allied Sciences, University of Ghana, Legon, Ghana
4. University of Cape Coast, School of Agriculture and Physical Sciences, Faculty of Physical Sciences, Department of Physics Cape Coast, Ghana