1. University of Malawi, Faculty of Science, Department of Biological Sciences, Zomba, Malawi
2. Domasi College of Education, Faculty of Science, Department of Biological Sciences, Domasi, Zomba, Malawi
3. University of Malawi, Faculty of Science, Department of Human Ecology, Zomba, Malawi
4. Malawi University of Business and Applied Sciences, Faculty of Applied Sciences, Department of Physics and Biochemical Sciences, Blantyre, Malawi