1. Department of Genitourinary Medicine, Sexual Health Department, Buckinghamshire Healthcare NHS Trust, Amersham, UK
2. Department of Genitourinary Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
3. Department of Obstetrics and Gynecology, Regional Hospital H Hart Tienen, University Hospital Antwerp
4. Infektionen in Gynäkologie und Geburtshilfe, Wuppertal, Germany
5. Research Unit for Reproductive Microbiology, Statens Serum Institut, Copenhagen, Denmark