[1] Hammersmith Hosp, Dept Gynaecol, Imperial Coll Healthcare NHS Trust, London, England
[2] Charing Cross Hosp, Dept Histopathol, Imperial Coll Healthcare NHS Trust, London, England
[3] Univ London Imperial Coll Sci Technol & Med, Dept Histopathol, Hammersmith Hosp, London, England