{"paper_id":"58ae80b6-fe96-4b85-a6eb-08cfb92f433f","body_text":"LHRW received grant funding from the NIHR, UKRI, Chief Scientist’s Office and Wellbeing of Women. LHRW’s institution received grant funding from Roche Diagnostics and honoraria for teaching from Gedeon Richter and Theramex. JPD received grant funding from the NIHR, Chief Scientist’s Office and Wellbeing of Women. AWH received grant funding from the NIHR, MRC, Chief Scientist’s Office, Wellcome Trust, Wellbeing of Women, Ferring and Roche. AWH’s institution received honoraria for consultancy from Roche Diagnostics, Gesynta and Joii; grant funding from Roche Diagnostics; and honoraria for teaching from Gedeon Richter. AWH has received lecture fees from Theramex. The other authors declare no competing interests. A W Horne is co-Editor-in-Chief of  Reproduction & Fertility  and was not involved in the review or editorial process for this paper, on which he is listed as an author.\n\nThis research was funded by MRC (Grant No. MR/N022556/1) and the Chief Scientist Office (Award No. TCS/18/43).\n\nAll authors contributed to the conception, design and delivery of the study. AWH and JPD secured funding. AWH, LHRW, JPD, JS and LJW were the trial management group. LHRW was PI for the lead site. JS and LJW performed the statistical analyses. LHRW, LJW, JS and AWH drafted the report, and all authors provided input to editing for publication and accept responsibility to submit for publication.","source_license":"CC0","license_restricted":false}