[1] Mayo Clin, Div Pulm Allergy & Sleep Med, 4500 San Pablo Rd, Jacksonville, FL 32224 USA
[2] Mayo Clin, Dept Anesthesiol, Jacksonville, FL 32224 USA
[3] Mayo Clin, Dept Surg, Div Thorac Surg, Rochester, MN USA
[4] Mayo Clin, Div Pulm & Crit Care Med, Rochester, MN USA