[1] Univ Coll Hosp London, UCL EGA Inst Womens Hlth, Gower St, London WC1E 6BT, England
[2] Sch Med, Aristotle Univ Thessaloniki, Dept Obstet & Gynaecol 1, Unit Human Reprod, Thessaloniki, Greece
[3] NewLifeBank, Madrid, Spain
[4] Univ Thessaly, Fac Med, Sch Hlth Sci, Dept Obstet & Gynaecol, Larisa, Greece
[5] Univ Manchester, Ctr Social Eth & Policy, Dept Law, Manchester, England
[6] Univ Ghent, Dept Philosophy & Moral Sci, Ghent, Belgium
[7] ESHRE Cent Off, Strombeek Bever, Belgium
[8] Univ Ghent, Dept Publ Hlth & Primary Care, Ghent, Belgium