THE ISOLATION OF POLIOMYELITIS VIRUS FROM HUMAN EXTRA-NEURAL SOURCES. I. COMPARISON OF VIRUS CONTENT OF PHARYNGEAL SWABS, OROPHARYNGEAL WASHINGS, AND STOOLS OF PATIENTS

^{Section of Preventive Medicine, Yale University School of Medicine, New Haven}

Aided by a grant from the National Foundation for Infantile Paralysis, Incorporated.

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^{Section of Preventive Medicine, Yale University School of Medicine, New Haven}

Aided by a grant from the National Foundation for Infantile Paralysis, Incorporated.

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^{Section of Preventive Medicine, Yale University School of Medicine, New Haven}

Aided by a grant from the National Foundation for Infantile Paralysis, Incorporated.

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