1. Department of Pharmaceutical Chemistry, University of Lagos, Lagos, Nigeria
2. Department of R&D, Emzor Pharmaceuticals, Lagos, Nigeria
3. Bristow Helicopters Nigeria Limited, ExxonMobil Qua Iboe Terminal, Eket, Akwa Ibom State, Nigeria
4. Centre for Occupational Health, Safety and Environment (COHSE), Faculty of Engineering, University of Port Harcourt, Choba, Rivers State, Nigeria
5. Physics Department, Eko City College of Management and Technology, Lagos, Nigeria
6. Administrative Office, Lagos State University of Science and Technology, Lagos, Nigeria
7. Independent Researcher, Lagos Nigeria