Tikk, Kaja ; Czock, David ; Haefeli, Walter E. ; Kopp-Schneider, Annette ; Brenner, Hermann (2018) Clinical trial protocol of the ASTER trial: a double-blind, randomized, placebo-controlled phase III trial evaluating the use of acetylsalicylic acid (ASA) for enhanced early detection of colorectal neoplasms. BMC Cancer, 18 (914). pp. 1-9. ISSN 1471-2407