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Echocardiographic Contrast Studies During Pericardiocentesis
P. A. N. CHANDRARATNA, M.D., M.R.C.P., F.A.C.P.; J. FIRST, M.D.; E. LANGEVIN, D.O.; R. O'DELL, D.O.
Annals of Internal Medicine 1977;87:199-200.
doi:10.7326/0003-4819-87-2-199
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