Dr. Risch is professor emeritus of epidemiology in the Department of Epidemiology and Public Health at the Yale School of Public Health and Yale School of Medicine. His research has focused extensively on the causes of cancer as well as prevention and early diagnosis.
https://www.theepochtimes.com/health/cancers-appearing-in-ways-never-before-seen-after-covid-vaccinations-dr-harvey-risch-5495364