[1] Univ Surrey, Royal Surrey Cty Hosp, Guildford Gynaecol Oncol Res Dept, Guildford, Surrey, England
[2] Univ Leicester, Endocannabinoid Res Grp, Reprod Sci Sect, Dept Canc Studies & Mol Med, Leicester, Leics, England
[3] Univ Leicester, Dept Gynaecol Oncol, Leicester, Leics, England
[4] Sidra Med & Res Ctr, Dept Obstet & Gynaecol, Doha, Qatar