Treatment-independent live birth after in-vitro fertilisation : a retrospective cohort study of 2,133 women

Acknowledgements We acknowledge the data management support of the Grampian Data Safe Haven (DaSH) and the associated financial support of NHS Research Scotland, through NHS Grampian investment in the Grampian DaSH. For more information, visit the DaSH website http://www.abdn.ac.uk/iahs/facilities/grampian-data-safe-haven.php. We would like to thank all the staff at Aberdeen Fertility Clinic for their help with database queries and case note searching. Funding This work was funded by a Chief Scientist Office Postdoctoral Training Fellowship in Health Services Research and Health of the Public Research (Ref PDF/12/06). The views expressed here are those of the authors and not necessarily those of the Chief Scientist Office. The funder did not have any role in the study design, in the collection, analysis, and interpretation of data, in the writing of the report nor in the decision to submit the paper for publication.Peer reviewedPostprin