[Long-term evaluation of the Hancock Modified Orifice Xenograft Model 250 in aortic position].
D000293:Adolescent; D000328:Adult; D001021:Aortic Valve / Q000601:surgery; D001705:Bioprosthesis; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications