[1] ODENSE UNIV HOSP,WINSLOWS INST HUMAN ANAT,DK-5000 ODENSE,DENMARK
[2] ODENSE UNIV HOSP,INST MED MICROBIOL,DK-5000 ODENSE,DENMARK
[3] RIGSHOSP,DEPT PEDIAT,CLIN GENET SECT,DK-2100 COPENHAGEN O,DENMARK
[4] UNIV LONDON LONDON HOSP,COLL MED,DEPT OBSTET GYNAECOL & REPROD PHYSIOL,LONDON E1 1BB,ENGLAND
[5] ST BARTHOLOMEWS HOSP,COLL MED,LONDON EC1A 7BE,ENGLAND