Author: Cyrus R. MehtaPeter BauerMartin PoschWerner BrannathRepeated Confidence Intervals for Adaptive Group Sequential Trials Cyrus R. Mehta, Peter Bauer, Martin Posch and Werner Brannath Statistics in Medicine, a Wiley InterScience publication, 2007 File: repeated-confidence-intervals-for-adaptive-group-sequential-trials.pdf Interest: Enforesys