title: Reply.
authors.affiliation: Nurture Fertility, The East Midlands Fertility Clinic, Nottingham, UK.|Division of Child Health, Obstetrics and Gynaecology,School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK.
authors.forename: A
authors.initials: A
authors.lastname: Richardson
authors.affiliation: Nurture Fertility, The East Midlands Fertility Clinic, Nottingham, UK.|Division of Child Health, Obstetrics and Gynaecology,School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK.
authors.forename: N
authors.initials: N
authors.lastname: Raine-Fenning