RT Journal Article SR Electronic T1 Sailing in the complexity of the ‘shark-fin’ sign JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 25 OP 78 DO 10.1136/heartjnl-2022-321654 VO 109 IS 1 A1 Antonio Landi A1 Anna Giulia Pavon A1 Marco Valgimigli YR 2023 UL http://heart.bmj.com/content/109/1/25.abstract AB