[1] CALIF DEPT HLTH SERV, EMERYVILLE, CA 94608 USA
[2] CHARITY HOSP LOUISIANA, DEPT SURG, NEW ORLEANS, LA 70112 USA
[3] SASKATCHEWAN CANC FDN, REGINA, SASKATCHEWAN, CANADA
[4] RADIOTHERAPY INST, CS-18000 PRAGUE 8, CZECHOSLOVAKIA
[5] NCI, EPIDEMIOL & BIOSTAT PROGRAM, RADIAT EPIDEMIOL BRANCH, BETHESDA, MD 20892 USA
[6] INT AGCY RES CANC, F-69372 LYON 08, FRANCE
[7] UNIV TEXAS, MD ANDERSON HOSP & TUMOR INST, CTR CANC, HOUSTON, TX 77030 USA
[8] HARVARD UNIV, SCH MED, BOSTON, MA 02115 USA
[9] IGM, HOSP ONCOL, HATO REY, PR 00919 USA
[10] NCI, DIV CANC PREVENT & CONTROL, APPL RES BRANCH, BETHESDA, MD 20892 USA
[11] IOWA CANC REGISTRY, IOWA CITY, IA 52242 USA
[12] AMER BOARD OBSTET & GYNECOL INC, SEATTLE, WA 98105 USA
[13] MASSACHUSETTS GEN HOSP, BOSTON, MA 02114 USA
[14] NEW YORK STATE DEPT HLTH, ROSWELL PK MEM INST, BUFFALO, NY 14263 USA
[15] DANISH CANC REGISTRY, DK-2100 COPENHAGEN, DENMARK
[16] KAROLINSKA HOSP, RADIUM HEMMET, S-10401 STOCKHOLM, SWEDEN
[17] SWEDISH CANC REGISTRY, S-10630 STOCKHOLM, SWEDEN
[18] THAMES CAN REGISTRY, SUTTON SM2 5PY, SURREY, ENGLAND
[19] UNIV LONDON LONDON SCH HYG & TROP MED, EPIDEMIOL MONITORING UNIT, LONDON WC1E 7HT, ENGLAND
[20] WESTON PK HOSP, SHEFFIELD S10 2SJ, ENGLAND
[21] UNIV BIRMINGHAM, DEPT SOCIAL MED, CANC EPIDEMIOL RES UNIT, BIRMINGHAM B15 2TJ, W MIDLANDS, ENGLAND
[22] MANITOBA CANC TREATMENT RES FDN, WINNIPEG R3E 0V9, MANITOBA, CANADA
[23] CANC CONTROL AGCY BRITISH COLUMBIA, VANCOUVER V5Z 3J3, BC, CANADA
[24] UNIV MANITOBA, FAC MED, WINNIPEG R3E 0V9, MANITOBA, CANADA
[25] ALBERTA CANC BOARD, CANC REGISTRY, EDMONTON, ALBERTA, CANADA
[26] ONTARIO CANC TREATMENT & RES FDN, TORONTO M4H 1A8, ONTARIO, CANADA
[27] ST JOHN REG HOSP, NEW BRUNSWICK PROV TUMOR REGISTRY, ST JOHN, NB, CANADA
[28] PROV CANC REGISTRY NOVA SCOTIA, HALIFAX, NS, CANADA
[29] UNIV MUNICH, WOMENS CLIN, D-8000 MUNICH 2, GERMANY
[30] UNIV HEIDELBERG, WOMENS CLIN, D-6900 HEIDELBERG, GERMANY
[31] UNIV GOTTINGEN, WOMENS CLIN, D-3400 GOTTINGEN, GERMANY
[32] NORWEGIAN RADIUM HOSP, OSLO 3, NORWAY
[33] FINNISH CANC REGISTRY, SF-00170 HELSINKI, FINLAND
[34] INST GUSTAVE ROUSSY, F-94805 VILLEJUIF, FRANCE
[35] INST ONCOL, SLOVENIA CANC REGISTRY, YU-61000 LJUBLJANA, YUGOSLAVIA
[36] IST NAZL STUDIO & CURA TUMORI, I-20133 MILAN, ITALY
[37] ICELANDIC CANC SOC, DIV GYNECOL ONCOL, CANC DETECT CLIN, IS-125 REYKJAVIK, ICELAND
[38] HARVARD UNIV, SCH PUBL HLTH, BOSTON, MA 02115 USA