title: Invited commentary.
authors.affiliation: University of California, San Francisco, 1325 Howard Ave, #703, Burlingame, CA94010. Electronic address: dullyot@aol.com.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Ullyot
mesh_terms: D006348:Cardiac Surgical Procedures / Q000193:education*; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*