[1] Univ Leeds, Leeds Inst Cardiovasc & Metab Medicine Discovery, Reprod & Early Dev Grp, Leeds, W Yorkshire, England
[2] Univ Leeds, Fac Med, Leeds, W Yorkshire, England
[3] Univ Leeds, Specialist Sci Educ Dept, Leeds Inst Cardiovasc & Metab Med, Leeds, W Yorkshire, England
[4] Mid Yorks Teaching Hosp NHS Trust, Obstet & Gynaecol, Wakefield, England
[5] Leeds Teaching Hosp NHS Trust, Leeds Fertil, Leeds, W Yorkshire, England
[6] Univ Leeds, Leeds, W Yorkshire, England
[7] Leeds Teaching Hosp NHS Trust, Leeds Inst Data Analyt, Leeds, W Yorkshire, England
[8] Leeds Teaching Hosp NHS Trust, Dept Paediat Oncol, Leeds, W Yorkshire, England