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Contributors Each author has made a significant contribution in reviewing the literature, drafting and revising the manuscript. Each author has seen and approved the manuscript before submission.
Competing interests DHS receives royalties from his textbook, ‘The Pericardium: A Comprehensive Textbook (Fundamental and Clinical Cardiology)’.
Patient consent Obtained.
Ethics approval Saint Vincent Hospital.
Provenance and peer review Not commissioned; externally peer reviewed.