Correction: Correction: High prevalence of undiagnosed COPD among patients evaluated for suspected myocardial ischaemia

J？nsson A, Fedorowski A, Engstr？m G, et al. High prevalence of undiagnosed COPD among patients evaluated for suspected myocardial ischaemia. Open Heart 2018;5:e000848. doi: 10.1136/openhrt-2018-00084