Young, Phillip MD*; Daniel, Bruce MD†; Sommer, Graham MD†; Kim, Bohyun MD*; Herfkens, Robert MD†
From the *Department of Radiology, Mayo Clinic, Rochester, MN; and †Department of Radiology, Stanford University Medical Center, Palo Alto, CA.
Received for publication October 25, 2011; accepted December 24, 2011.
Reprints: Phillip Young MD, 200 First Street SW, Rochester, MN 55905 (e-mail: [email protected]).
The authors report no conflicts of interest.