[1] SUNY Downstate Hlth Sci Univ, Dept Radiol, 450 Clarkson Ave, Brooklyn, NY 11203 USA
[2] SUNY Downstate Hlth Sci Univ, Div Pulm & Crit Care Med, Dept Med, Brooklyn, NY USA
[3] Vis Radiol, Dallas, TX USA
[4] Penn State Milton S Hershey Med Ctr, Sect Emergency Radiol, Dept Radiol & Med, Hershey, PA USA