Hauptlorenz, S Influence of beta-blockade on ejection fraction, ANP, and cGMP in patients after myocardial infarction. [electronic resource] - JAMA Dec 1989 - 2996-7 p. digital Publication Type: Letter ISSN: 0098-7484 Subjects--Topical Terms: Atrial Natriuretic Factor--bloodCyclic GMP--bloodHumansMetoprolol--therapeutic useMyocardial Infarction--drug therapyStroke Volume