RT Journal Article SR Electronic T1 Correction to “Low-value preoperative cardiac testing before low-risk surgical procedures: a population-based cohort study” JF CMAJ Open JO CMAJ FD Canadian Medical Association SP E485 OP E485 DO 10.9778/cmajo.20230049 VO 11 IS 3 YR 2023 UL http://www.cmajopen.ca/content/11/3/E485.abstract AB