[1] Univ Washington, Dept Surg, Seattle, WA 98195 USA
[2] Univ Calif San Francisco, Dept Surg, Div Endocrine Surg, San Francisco, CA USA
[3] Univ Washington, Dept Surg, Div Vasc Surg, Seattle, WA 98195 USA
[4] Carolinas Med Ctr, Dept Surg, Charlotte, NC 28203 USA
[5] Univ Washington, Dept Surg, Div Pediat Surg, 4800 Sand Point Way NE, Seattle, WA 98105 USA