[1] ORGANON INT BV, DEPT MED SERV, 5340 BH OSS, NETHERLANDS
[2] ROYAL LONDON HOSP, DEPT OBSTET & GYNECOL, LONDON, ENGLAND
[3] DEPT OBSTET & GYNECOL, SHREWSBURY, ENGLAND
[4] SOUTHMEAD GEN HOSP, URODYNAM UNIT, BRISTOL BS10 5NB, AVON, ENGLAND
[5] FRAUENKLIN KLINIKUM GROSSHADERN, DEPT OBSTET & GYNECOL, W-8000 MUNICH, GERMANY
[6] ST PAULS HOSP, DEPT OBSTET & GYNECOL, CHELTENHAM, GLOS, ENGLAND
[7] ST ANNA ZIEKENHUIS, DEPT OBSTET & GYNECOL, 5342 BT OSS, NETHERLANDS
[8] AALBORG HOSP, DEPT PATHOL, DK-9100 AALBORG, DENMARK
[9] AALBORG HOSP, DEPT UROL, DK-9100 AALBORG, DENMARK