Letter: Effect of new beta-adrenergic blocking agent.
D000787:Angina Pectoris / Q000517:prevention & control; D001262:Atenolol / Q000494:pharmacology*; D006801:Humans; D011217:Practolol / Q000494:pharmacology; D011412:Propanolamines / Q000494:pharmacology*; D013223:Statistics as Topic
D011412:Propanolamines; D001262:Atenolol; D011217:Practolol