The role of patient advocates in clinical trials: Perspectives from investigators and advocates in the Cancer and Leukemia Group B (CALGB) Katz, M. L. , Archer, L. E. , Peppercorn, J. M. , Kereakoglow, S. ... - - J. Clin. Oncol. - 2010 Abstract - No-Endpoint - Other - Patient Adv - No Study Assigned