Aortic Valve Insufficiency/surgery; Aortic Valve/surgery; Autografts/surgery; Heart Valve Prosthesis Implantation/methods; Pulmonary Surgical Procedures/methods; Pulmonary Valve/surgery; Adolescent; Aorta/surgery; Aortic Valve/pathology; Aortic Valve Insufficiency/pathology; Aortic Valve Stenosis/etiology; Aortic Valve Stenosis/pathology; Aortic Valve Stenosis/surgery; Child; Child, Preschool; Female; Follow-Up Studies; Heart Valve Prosthesis; Humans; Infant; Male; Postoperative Complications/pathology; Postoperative Complications/surgery; Prosthesis Failure; Reoperation/statistics & numerical data; Survival Analysis; Transplantation, Autologous; Treatment Outcome