ANGIOCARDIOGRAPHY—contrast visualization of the heart and great vessels — was first made a practical procedure by Robb and Steinberg 1 in 1938. In subsequent reports these authors have described in ...
SHOULD closure of a patent ductus arteriosus with reversal of flow be attempted? If so, how can the high surgical mortality hitherto reported 1–3 be reduced? An attempt is made to answer these ...
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