1. Department of Biological Sciences, School of Environmental Sciences, Njala University, PMB, Freetown, Sierra Leone.
2. National Centre for Naturopathic Medicine, Faculty of Health, Southern Cross University, Australia 3Faculty of Pharmaceutical Sciences, College of Medicine and Allied Health Sciences, University of Sierra Leone.
3. Department of Environmental Health, School of Community Health Sciences, Njala University, PMB, Freetown, Sierra Leone.