during 15 years from 1975 to 1990, thirteen cases of supravalvar aortic stenosis were admitted at the pediatrics department of shahid rajai heart hospital, tehran. all patients were subjected to cardiac catheterization and a angiocardiography. patients ranged in age from 3.5 years to 14 years with a mean of 8.7 years. seventy seven percent of childen were male. eight cases (61.5%) had williams&...