| Not yet recruiting | 2 | 100 | Canada | acetylsalicylic acid delayed release tablets, 81mg, ASPIRIN 81mg, Drug Identification Number 02237726 | University of Calgary, Canadian Institutes of Health Research (CIHR), Canadian Cancer Society (CCS) | Colorectal Cancer, Colorectal Adenoma, Colorectal Adenomatous Polyp | 03/23 | 07/23 | | |