Etienne de Harven, (M.D.) was born in Brussels, Belgium. He obtained a medical degree in Brussels, 1953 and did research at Sloan Kettering Institute, New York, from 1956 until 1981 (electron microscopy of cancer cells and of murine leukemia associated viruses). He was Professor (Pathology) at the University of Toronto, 1981–1993 and became Emeritus Professor in 1993. He is a member of the Presidential AIDS Advisory Panel in South Africa.