Associate Research Scientist , Ph.D. (1992) Sri Krishnadeveraya University
Research Scientist
Senior Research Scientist , Ph.D. (1989) Kansas State University
Senior Research Scientist & BMC Director, Ph.D. (1985) University of Madras
Senior Research Scientist, Ph.D. (1990) University of Calcutta
Senior Research Scientist, M.D./Ph.D. (2001) Peking University