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*<b>[http://www.kidney.de/mlpefetch.php?search=7259273 Surgical management of patent ductus arteriosus in newborn infants of low birthweights A review of 33 cases ]</b> Arch Dis Child 1981; 56(6) ; 436-9 Smith DR; Cook DH; Izukawa T; Trusler GA; Swyer PR; Rowe RD
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