[1] PRINCESS MARGARET HOSP, DEPT PATHOL, TORONTO M4X 1K9, ONTARIO, CANADA
[2] UNIV TEXAS, HLTH SCI CTR, DIV MED ONCOL, SAN ANTONIO, TX 78284 USA
[3] WAKE FOREST UNIV, BOWMAN GRAY SCH MED, DEPT PATHOL, WINSTON SALEM, NC 27103 USA
[4] EVANSTON HOSP CORP, DEPT MED ONCOL, EVANSTON, IL 60201 USA
[5] LEIDEN UNIV, DEPT PATHOL, 2300 RA LEIDEN, NETHERLANDS
[6] LUND UNIV, DEPT ONCOL, S-22101 LUND, SWEDEN