| http://www.w3.org/ns/prov#value | - The balloon may be any suitable length, for example 12 to 24 inches long, to provide of a tunnel of convenient length when exposing the perforating veins, and the balloon may be any convenient diameter or width, for example 2 to 3 inches, to allow for laparoscopic instruments to fit and operate conveniently within the tunnel created by the balloon.
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