[1] Mayo Clin, Anesthesiol & Perioperat Med, Rochester, MN USA
[2] Mayo Clin, Anesthesiol, Rochester, MN USA
[3] Mayo Clin, Anesthesiol & Perioperat Med, Jacksonville, FL 32224 USA
[4] Mayo Clin, Radiol, Rochester, MN USA
[5] Univ Waterloo, Kinesiol, Waterloo, ON, Canada