[1] SSDZ,DEPT IMMUNOL & INFECT DIS,CTR DIAGNOST,NL-2500 GA DELFT,NETHERLANDS
[2] SSDZ,DEPT BIOL MOL,CTR DIAGNOST,NL-2500 GA DELFT,NETHERLANDS
[3] UNIV AMSTERDAM,ACAD MED CTR,DIV OBSTET & GYNAECOL,NL-1105 AZ AMSTERDAM,NETHERLANDS
[4] UNIV AMSTERDAM,ACAD MED CTR,DEPT OBSTET & GYNAECOL,NL-1105 AZ AMSTERDAM,NETHERLANDS
[5] UNIV GRONINGEN HOSP,DEPT PATHOL,GRONINGEN,NETHERLANDS
[6] ERASMUS UNIV ROTTERDAM,DEPT DERMATOVENEREOL,ROTTERDAM,NETHERLANDS