[1] Mayo Clin & Mayo Fdn, Dept Diagnost Radiol, Rochester, MN 55905 USA
[2] Mayo Clin & Mayo Fdn, Div Pulm & Crit Care Med & Internal Med, Rochester, MN 55905 USA
[3] Mayo Clin Scottsdale, Div Pulm Med, Scottsdale, AZ USA
[4] Mayo Clin Scottsdale, Dept Diagnost Radiol, Scottsdale, AZ USA
[5] Mayo Clin Scottsdale, Biostat Sect, Scottsdale, AZ USA
[6] Vancouver Gen Hosp, Dept Diagnost Radiol, Vancouver, BC, Canada
[7] Mem Med Ctr, Dept Diagnost Radiol, Springfield, IL 62781 USA
[8] Shiga Hlth Insurance Hosp, Dept Diagnost Radiol, Otsu, Shiga, Japan
[9] NYU Med Ctr, Dept Diagnost Radiol, New York, NY 10016 USA
[10] Duke Univ, Med Ctr, Dept Diagnost Radiol, Durham, NC USA