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Surgical treatment for secundum atrial septal defects in patients >40 years old

A randomized clinical trial

^a Departments of Adult Congenital Heart Disease and Pediatric Cardiology, National Institute of Cardiology of Mexico "Ignacio Chávez," Mexico City, Mexico. This study was financially supported by the National Institute of Cardiology of Mexico "Ignacio Chávez."

View larger version (22K): [in a new window]   Figure 1 Trial profile.

View larger version (30K): [in a new window]   Figure 2 Event-free probability for primary end point by type of treatment and age at entry.