| 1990. | 4. | Department of Medical Technology, School of Medical Sciences, The University of Tokushima, Research Associate |
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| 2000. | 5. | Department of Anesthesiology, The Uniformed Service University of Health Sciences, USA, Visiting Scientist, |
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| 2001. | 4. | Department of Medical Technology, School of Medical Sciences, The University of Tokushima, Associate Professor |
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| 2001. | 10. | Department of Morphological Laboratory Science, Major in Laboratory Science, School of Health Sciences, The University of Tokushima, Associate Professor |
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| 2007. | 4. | Department of Morphological Laboratory Science, Major in Laboratory Science, School of Health Sciences, The University of Tokushima, Professor. |
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