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Purpose : To know the natural course of the ostium secundum ASD including its rate of
spontaneous closure.
Methods : We studied 259 cases who were diagnosed as ostium secundum ASD by
2D-echocardiography at Department of Pediatrics, Kyungpook National University Hospital
between Jan. 1985 and Dec. 1994. According to the age at diagnosis, we divided them into
two groups, group I (those diagnosed before 1... |