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 E735 OP E735 DO 10.9778/cmajo.20230051 VO 11 IS 4 YR 2023 UL http://www.cmajopen.ca/content/11/4/E735.abstract AB