title: Survey of selected cardiologists for an operational definition of normal sinus heart rate.
authors.affiliation: Cardiology Division, St. Vincent Hospital, Worcester, MA.
authors.forename: D H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001291:Attitude of Health Personnel; D001919:Bradycardia / Q000175:diagnosis; D002309:Cardiology / Q000706:statistics & numerical data*; D003625:Data Collection; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D012016:Reference Values; D013610:Tachycardia / Q000175:diagnosis; D014481:United States