- AFRC Institute of Animal Physiology, Animal Research Station, University of Cambridge, Cambridge, United Kingdom – Sept. 1978 – June 1979
- Ahmadu Bello University, Zaria, Nigeria July 1976 – Sep 1978
- University of Sydney, Sydney, Australia Feb 1974 – June 1975
- University of Ibadan, Ibadan, Nigeria Sept. 1967 – Feb 1974
