[1] UNIV MARYLAND, SCH MED, DEPT SURG, BALTIMORE, MD 21201 USA
[2] UNIV MARYLAND, SCH MED, DEPT RADIAT THERAPY, BALTIMORE, MD 21201 USA
[3] UNIV MARYLAND, SCH MED, DEPT RADIOL, BALTIMORE, MD 21201 USA
[4] UNIV MARYLAND, SCH MED, DEPT PATHOL, BALTIMORE, MD 21201 USA