Childhood Cancer 2016
He considers the issues facing data gathering for interview-based studies, and contrasts these results with his own study of radiation-associated leukemia, resulting from gamma ray and radon exposure, among others factors.
Radiation is discussed as a causative factor of childhood leukemia, among other causes, by Prof Denis Henshaw here.
5 - 7 Sep 2016
https://ecancer.org/en/video/5199-childhood-leukaemia-and-natural-background-radiation