Authors: Ipek Gurol-Urganci; Jennifer Jardine; Fran Carroll; Alissa Frémeaux; Patrick Muller; Sophie Relph; Lara Waite; Kirstin Webster; Sam Oddie; Jane Hawdon; Tina Harris; Asma Khalil; Jan van der Meulen Journal: BJOG Date: 2022-04-21 Impact factor: 7.331