title: [20 years of heart valve surgery (1). Development of artificial heart valves].
mesh_terms: D000925:Anticoagulants / Q000627:therapeutic use; D001705:Bioprosthesis; D005112:Extracorporeal Circulation; D005858:Germany; D006350:Heart Valve Prosthesis / Q000145:classification / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D014481:United States
chemical_list: D000925:Anticoagulants
vernacular_title: 20 Jahre Herzhlappenchirurgie (1). Entwicklung der künstlichen Herzklappenventile.