RT Journal Article SR Electronic T1 Correction: Fractional flow reserve derived from microcatheters versus standard pressure wires: a stenosis-level meta-analysis JF Open Heart JO Open Heart FD British Cardiovascular Society SP e000971corr1 DO 10.1136/openhrt-2018-000971corr1 VO 6 IS 2 YR 2019 UL http://openheart.bmj.com/content/6/2/e000971corr1.abstract AB