NCT00690924 2018-06-04Calcitriol in Preventing Lung Cancer in Smokers and Former Smokers at High Risk of Lung CancerRoswell Park Cancer InstitutePhase NA Completed16 enrolled 6 charts
NCT00512746 2011-12-21Screening for Lung Cancer in Current or Past Smokers With Chronic Obstructive Pulmonary DiseaseUniversity College, LondonPhase NA Completed1,569 enrolled