Senior Scientist, R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Dr. Leo N. Guslitser is a senior scientist (emeritus) of R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine. He is an author of the monograph "Epidemiology of Malignant Tumors in Ukraine" (1988) and co-author of the monograph "Cancer Epidemiology in USSR and USA" (1979).