Up to 10% of childhood cancers are caused by radiological examination during pregnancy.

- Richard Doll

Basic research is not the same as development. A crash programme for the latter may be successful; but for the former it is like trying to make nine …

- Richard Doll

The risk of developing carcinoma of the lung increases steadily as the amount smoked increases. If the risk among non-smokers is taken as unity and t…

- Richard Doll