[1] KAROLINSKA HOSP, RADIUM HEMMET, S-10401 STOCKHOLM, SWEDEN
[2] UNIV HOSP UPPSALA, DEPT GYNAECOL & OBSTET, S-75185 UPPSALA, SWEDEN
[3] US DEPT HHS, NCI, DIV CANC PREVENT & CONTROL, BETHESDA, MD 20892 USA
[4] NATL BOARD HLTH & WELF, CANC REGISTRY, STOCKHOLM, SWEDEN