BMJ video: The man who stopped smoking

BMJ video: Richard Doll: The man who stopped smoking.

"Richard Doll was a luminary of clinical research whose case control study, published in the BMJ in 1950, first identified smoking as an important cause of cancer and other diseases.

He carried his research out on doctors in the UK who smoked, and tracked their mortality over the course of 50 years. The latest paper being published in the BMJ in 2004."