%0 Journal Article %A Trenton E Burgess %A Ngoc N Le %A Gary S Olds %A Peter D Sullivan %A André Martin Mansoor %T Pericardial knock %D 2019 %R 10.1136/bcr-2019-233546 %J BMJ Case Reports %P e233546 %V 12 %N 12 %U https://casereports.bmj.com/content/bmjcr/12/12/e233546.full.pdf