RT Journal Article SR Electronic T1 Rare cause of massive haemoptysis diagnosed by ultrasonography in the ICU JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP thorax-2022-219559 DO 10.1136/thorax-2022-219559 A1 Wincy Wing Sze Ng A1 Kevin Chin A1 Sin Man Lam YR 2023 UL http://thorax.bmj.com/content/early/2023/02/19/thorax-2022-219559.abstract AB