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In a retrospective study of 345 patients with oesophageal atresia, cardiovascular malformations were present in 96 patients (27 8%) Of the 2I stillborn cases, 6 had cardiovascular malformations, and since this incidence is not significantly different from the incidence in live-born cases, the stillborn cases will not be considered separately.2) Sex There were I86 male patients and I59 female patients. Of the 96 with cardiovascular malformations, 48 were male and 48 female.3) Type of cardiovascular defect These are set out in Table i. No case is included under more than one heading.

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