Angiodysplasia; Aortic Valve Stenosis; Aortic Valve/surgery; Calcinosis; Gastrointestinal Hemorrhage; Heart Valve Prosthesis Implantation; von Willebrand Diseases; Aged; Aged, 80 and over; Angiodysplasia/diagnosis; Angiodysplasia/epidemiology; Angiodysplasia/physiopathology; Anticoagulants/therapeutic use; Aortic Valve/pathology; Aortic Valve Stenosis/epidemiology; Aortic Valve Stenosis/pathology; Aortic Valve Stenosis/physiopathology; Aortic Valve Stenosis/surgery; Calcinosis/epidemiology; Calcinosis/pathology; Calcinosis/physiopathology; Disease Management; Female; Gastrointestinal Diseases/epidemiology; Gastrointestinal Diseases/physiopathology; Gastrointestinal Hemorrhage/diagnosis; Gastrointestinal Hemorrhage/epidemiology; Gastrointestinal Hemorrhage/physiopathology; Heart Valve Prosthesis Implantation/methods; Heart Valve Prosthesis Implantation/statistics & numerical data; Humans; Incidence; Male; Outcome Assessment, Health Care; Retrospective Studies; Severity of Illness Index; Syndrome; Vascular Surgical Procedures/methods; von Willebrand Diseases/diagnosis; von Willebrand Diseases/epidemiology; von Willebrand Diseases/physiopathology