1. Department of Biochemistry, University of Nigeria, Nsukka, Nigeria
2. Department of Science Laboratory Technology, University of Nigeria, Nsukka, Enugu State, Nigeria.
3. Institute for Drug-Herbal Medicine-Excipient Research and Development, University of Nigeria, Nsukka. Enugu State, Nigeria
4. Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria.