STUDIES ON THE RELIEF OF PAIN BY COUNTERIRRITATION

^{Institute of Neurology, the Department of Research Therapeutics, the Johnson Foundation, Philadelphia}

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

Find articles by Gammon, G. in: JCI | PubMed | Google Scholar

^{Institute of Neurology, the Department of Research Therapeutics, the Johnson Foundation, Philadelphia}

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

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