THE human aortic valve consists of three cusps made of relatively inelastic, muscle-free material about 0.15 mm thick. It opens and shuts about once a second, and withstands a pressure difference ...

"As an aside, the Ross procedure, which is my preference in this age group, is the only aortic valve replacement procedure ...

Large and rare duplications and deletions in a chromosome region known as 22q11.2 , which involves genes that regulate ...