Prime Archives in CardiologyReferral of Patients for Surgical Aortic Valve Replacement before and after Introduction of the Transcatheter Aortic Valve Implantation—Changing Patterns of Preoperative Characteristics and Volume and Postoperative OutcomeDownloadReferral-of-Patients-for-Surgical-Aortic-Valve-Replacement-before-and-after-Introduction-of-the-Transcatheter-Aortic-Valve-Implantation—Changing-Patterns-of-Preoperative-Char