[1] INT AGCY RES CANC,F-69372 LYON 08,FRANCE
[2] UNIV TEXAS,MD ANDERSON HOSP & TUMOR INST,HOUSTON,TX 77030
[3] HARVARD UNIV,SCH MED,BOSTON,MA 02115
[4] CALIF DEPT HLTH SERV,EMERYVILLE,CA 94608
[5] IGM ONCOL HOSP,HATO REY,PR 00919
[6] NEW YORK STATE DEPT HLTH,ROSWELL PK MEM INST,BUFFALO,NY 14263
[7] CHARITY HOSP LOUISIANA NEW ORLEANS,DEPT SURG,NEW ORLEANS,LA 70112
[8] IOWA CANC REGISTRY,IOWA CITY,IA 52242
[9] MASSACHUSETTS GEN HOSP,BOSTON,MA 02114
[10] KAROLINSKA HOSP,RADIUM HEMMET,S-10401 STOCKHOLM,SWEDEN
[11] SWEDISH CANC REGISTRY,S-10630 STOCKHOLM,SWEDEN
[12] DANISH CANC REGISTRY,DK-2100 COPENHAGEN,DENMARK
[13] THAMES CANC REGISTRY,SUTTON SM2 5PY,SURREY,ENGLAND
[14] RADCLIFFE INFIRM,IMPERIAL CANC RES FUND,CANC EPIDEMIOL UNIT,OXFORD OX2 6HE,ENGLAND
[15] UNIV LONDON LONDON SCH HYG & TROP MED,EPIDEMIOL MONITORING UNIT,LONDON WC1E 7HT,ENGLAND
[16] CHRISTIE HOSP & HOLT RADIUM INST,MANCHESTER M20 9BX,LANCS,ENGLAND
[17] UNIV BIRMINGHAM,EPIDEMIOL RES UNIT,CANC REGISTRY,BIRMINGHAM B15 2TJ,W MIDLANDS,ENGLAND
[18] MANITOBA CANC TREATMENT RES FDN,WINNIPEG R3E 0V9,MANITOBA,CANADA
[19] UNIV MANITOBA,FAC MED,WINNIPEG R3E 0V9,MANITOBA,CANADA
[20] CANC CONTROL AGCY BRITISH COLUMBIA,VANCOUVER V5Z 3J3,BC,CANADA
[21] ALBERTA CANC BOARD,CANC REGISTRY,EDMONTON,ALBERTA,CANADA