... use of mammography has resulted in the more frequent detection of DCIS. In view of the cost involved and the effort required todiagnose these tumors and in light of the debate about both the initial ... disclosure of the re-sults. This article is the first published report of the findingsobtained from the P-1 study.METHODSPlanning and Initiation of the TrialIn June 1990, the National Cancer Institute ... Prevention and Control, by the CancerTherapy Evaluation Program Review Committee, by representatives of the Na-tional Heart, Lung, and Blood Institute, and by other NCI /National Institutes of Health...