[1] Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA
[2] Johns Hopkins Univ, Sch Med, Dept Med Oncol, Baltimore, MD USA
[3] Johns Hopkins Univ, Sch Med, Dept Radiat Oncol, Baltimore, MD USA
[4] Johns Hopkins Univ, Sch Med, Dept Radiol, Baltimore, MD 21205 USA
[5] Johns Hopkins Univ, Sch Med, Dept Intervent Radiol, Baltimore, MD USA
[6] Johns Hopkins Univ, Sch Med, Dept Med, Baltimore, MD 21205 USA
[7] Johns Hopkins Univ, Sch Med, Dept Pathol, Baltimore, MD 21205 USA
[8] Johns Hopkins Univ Hosp, Div Surg Oncol, Dept Surg, Baltimore, MD 21287 USA