ESTIMATIONS OF THE WORK OF THE HEART DURING AND BETWEEN ATTACKS OF ANGINA PECTORIS

^{Department of Research Therapeutics, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

^{Department of Pharmacology, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

Find articles by Starr, I. in: JCI | PubMed | Google Scholar

^{Department of Research Therapeutics, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

^{Department of Pharmacology, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

Find articles by Gamble, C. in: JCI | PubMed | Google Scholar

^{Department of Research Therapeutics, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

^{Department of Pharmacology, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

Find articles by Donal, J. in: JCI | PubMed | Google Scholar

^{Department of Research Therapeutics, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

^{Department of Pharmacology, and the Medical Division of the Hospital of the University of Pennsylvania, Philadelphia}

Find articles by Collins, L. in: JCI | PubMed | Google Scholar