STUDIES OF CONGENITAL HEART DISEASE. I. TECHNIQUE OF VENOUS CATHETERIZATION AS A DIAGNOSTIC PROCEDURE

^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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^{Medical Clinic and the Department of Radiology, Peter Bent Brigham Hospital}

^{Department of Medicine, Harvard Medical School}

^{Department of Radiology, Harvard Medical School}

This investigation was aided in part by a grant from the John and Mary R. Markle Foundation and from the Proctor Fund of the Harvard Medical School.

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