Maad Ullah, Haris Bin Bilal.
Supra-valvular Aortic Stenosis with mental retardation: a case of William Beuren Syndrome.
Pak J Cardiol Jan ;15(3):133-5.

Supravalvular Aortic Stenosis (SVAS) with elfin fades and mental sub normality is the hallmark of William Beuren Syndrome (WBS). The diagnostic confirmation abroad is done with cytogenetic studies with fluorescent in situ hybridization (FISH). We have to base our diagnosis on available clinical information alone.

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