title: For everything there is a season.
authors.affiliation: Division of Cardiovascular Surgery of Toronto General Hospital and University of Toronto, Toronto, Ontario, Canada. tirone.david@uhn.on.ca
authors.forename: Tirone E
authors.initials: TE
authors.lastname: David
mesh_terms: D006348:Cardiac Surgical Procedures / Q000639:trends*; D002309:Cardiology / Q000639:trends*; D006801:Humans; D014481:United States