[Heart surgery in patients over 50 years of age].
D000367:Age Factors; D006348:Cardiac Surgical Procedures / Q000401:mortality*; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged
Herzchirurgie bei Patienten über 50 Jahren.