1. Department of Chemical Sciences and Technology, Technical University of Kenya, Nairobi, Kenya & Center for Research in Therapeutic Sciences, Strathmore University Nairobi, Kenya
2. Kenya Medical Research Institute, Nairobi, Kenya
3. Technical University of Kenya, Nairobi, Kenya
4. Maasai Mara University, Nairobi, Kenya
5. Center for Research in Therapeutic Sciences, Strathmore University Nairobi, Kenya & Kenya Medical Research Institute, Nairobi, Kenya