NCT00272324 2020-03-13Aspirin/Folate Prevention of Large Bowel PolypsDartmouth-Hitchcock Medical CenterPhase 2/3 Completed1,121 enrolled
NCT00153816 2017-03-15Vitamin D/Calcium Polyp Prevention StudyDartmouth-Hitchcock Medical CenterPhase 2/3 Completed2,813 enrolled 15 charts