Gary Parkes general practitioner, Trisha Greenhalgh professor , Mark Griffin lecturer in medical statistics, Richard Dent consultant chest physician department of chest medicine
Parkes G, Greenhalgh T, Griffin M, Dent R.
Effect on smoking quit rate of telling patients their lung age: the Step2quit randomised controlled trial
BMJ 2008; 336 :598
doi:10.1136/bmj.39503.582396.25