Dr. Claudia Henschke: Today the CT scanners are so good that we get information about lung nodules which might represent lung cancer, but we can also tell about emphysema or even chronic bronchitis. So the CT scans are very, very good in identifying such information, but also about your cardiac risk. So we see calcifications in your coronary arteries. So we think that today's screening should be looking for lung cancer, emphysema, chronic bronchitis, and also cardiac disease. One low dose CT scan can provide information and all of those diseases.