[1] Emory Univ, Sch Med, Dept Urol, Atlanta, GA 30322 USA
[2] Emory Univ, Sch Med, Dept Anesthesiol, Atlanta, GA 30322 USA
[3] Emory Univ, Sch Med, Div Intervent Radiol & Image Guided Med, Atlanta, GA 30322 USA
[4] Emory Univ, Sch Med, Winship Canc Inst, Atlanta, GA 30322 USA