[1] Airedale NHS Fdn Trust, Keighley, England
[2] Airedale NHS Fdn Trust, Biochem, Keighley, England
[3] Manchester Univ NHS Fdn Trust, St Marys Hosp, Manchester Acad Hlth Sci Ctr, Dept Gynaecol, Manchester, England
[4] Univ Manchester, St Marys Hosp, Fac Biol Med & Hlth, Div Canc Sci,Gynaecol Oncol Res Grp, Manchester, Lancs, England