title: The 'threshold age' in choosing biological versus mechanical prostheses in western countries.
authors.affiliation: University of Glasgow, Royal Infirmary, Glasgow, UK. d.j.wheatley@clinmed.gla.ac.uk
authors.forename: David J
authors.initials: DJ
authors.lastname: Wheatley
mesh_terms: D000367:Age Factors; D001705:Bioprosthesis; D006349:Heart Valve Diseases / Q000601:surgery; D006350:Heart Valve Prosthesis; D006801:Humans; D006113:United Kingdom; D014481:United States