1. Newcastle University; Obstetrics and Gynaecology; Newcastle upon Tyne UK NE1 7RU
2. St Mary's Hospital; Obstetrics and Gynaecology; Manchester UK
3. University of Birmingham; School of Clinical and Experimental Medicine; C/o Academic Unit, 3rd Floor, Birmingham Women's Hospital Foundation Trust Mindelsohn Way Birmingham UK B15 2TG
4. University of Nottingham; Division of Child Health, Obstetrics and Gynaecology, School of Medicine; D Floor, East Block, Queens Medical Centre Nottingham UK NG27SE