The Multi-Center Randomized Trial of Lung Cancer Related Mortality

This is a multi-center randomized trial. They are looking at primary outcome of lung cancer associated mortality. Patients age 55 to 74, they've had at least a 30-pack year smoking history and if there are still we smoking or if they're a former smoker they've quit within the last 15 years. So this is a pretty high risk group for lung cancer.