RT Journal Article SR Electronic T1 Large labial haematoma needing surgical intervention JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e247066 DO 10.1136/bcr-2021-247066 VO 14 IS 11 A1 Amy P Worrall A1 Eve Gaughan A1 Michael PP Geary YR 2021 UL http://casereports.bmj.com/content/14/11/e247066.abstract AB