Alliance A031501: Phase III Randomized Adjuvant Study of MK-3475 (Pembrolizumab) in Muscle Invasive and Locally Advanced Urothelial Carcinoma (MIBC) (AMBASSADOR) vs Observation Apolo, Andrea , Rosenberg, Jonathan , Morris, Michael ... - ASCO GU - J Clin Oncol - 2019 Abstract - No-Endpoint - Trial-Description-Only - GU - A031501