About the Authors

Jane E. Norman

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing

jane.e.norman@bristol.ac.uk

Affiliation Faculty of Health Sciences, University of Bristol, Bristol, United Kingdom

John Norrie

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Edinburgh Clinical Trials Unit, University of Edinburgh, Edinburgh, United Kingdom

Graeme MacLennan

Roles Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliation Centre for Healthcare Randomised Trials, University of Aberdeen, Aberdeen, United Kingdom

David Cooper

Roles Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Centre for Healthcare Randomised Trials, University of Aberdeen, Aberdeen, United Kingdom

Sonia Whyte

Roles Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – review & editing

Affiliation Tommy’s Centre for Maternal and Fetal Health, MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh, United Kingdom

Sue Chowdhry

Roles Formal analysis, Investigation, Writing – review & editing

Affiliation Usher Institute, University of Edinburgh, Edinburgh, United Kingdom

Sarah Cunningham-Burley

Roles Formal analysis, Funding acquisition, Investigation, Supervision, Writing – review & editing

Affiliation Usher Institute, University of Edinburgh, Edinburgh, United Kingdom

Xue W. Mei

Roles Formal analysis, Writing – review & editing

Affiliation Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom

Joel B. E. Smith

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliations Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom, NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom

Andrew Shennan

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Department of Women’s and Children’s Health, King’s College London, London, United Kingdom

Stephen C. Robson

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Institute of Cellular Medicine, University of Newcastle, Newcastle, United Kingdom

Steven Thornton

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom

Mark D. Kilby

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Fetal Medicine Centre, Birmingham Women’s and Children’s NHS Foundation Trust and College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom

Neil Marlow

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Elizabeth Garrett Anderson Institute for Women’s Health, University College London, London, United Kingdom

Sarah J. Stock

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Usher Institute, University of Edinburgh, Edinburgh, United Kingdom

Phillip R. Bennett

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Institute for Reproductive and Developmental Biology, Imperial College London, London, United Kingdom

Jane Denton

Roles Formal analysis, Funding acquisition, Investigation, Methodology, Writing – review & editing

Affiliation Multiple Births Foundation, London, United Kingdom

on behalf of the STOPPIT-2 collaborative group

Membership of the STOPPIT-2 collaborative group is provided in the Acknowledgements.

Affiliation Multiple Births Foundation, London, United Kingdom

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests. JEN has received grants from government and charitable bodies for research into understanding the mechanism of term and preterm labour and understanding treatments. Within the last 3 years she has acted on a Data Safety and Monitoring Board for a study involving a preterm birth therapeutic agent for Glaxo Smith Kline, and has provided consultancy for Dilafor on drugs to alter labour progress. PRB reports personal fees from ObsEva Geneva, other from ObsEva Geneva, outside the submitted work; In addition, PRB has a patent PCT/GB1997/000529 WO1997031631 A1 Cox-2 selective inhibitors for managing labour and uterine contractions issued, a patent PCT/GB2004/001380 WO2005053705 A1 Use of a cyclopentenone prostaglandin for delaying the onset and/or preventing the continuation of labour (Priority Date Dec 2, 2003). issued, a patent PCT/GB2016/050618 Circulating miRNAs predictive of cervical shortening and preterm birth (Pending UK filing 6th March 2015 /Full international filing completed 7th March 2016). issued, a patent PCT/GB2016/050621 Rapid evaporative ionisation mass spectroscopy (REIMS) and Desorbtion Electrospray Ionisation Mass Spectroscopy (DESI-MS) analysis of swabs and biopsy samples. (Pending UK filing 6th March 2015 /Full international filing completed 7th March 2016 pending, a patent PCT/GB2019 Desorbtion Electrospray Ionisation Mass Spectroscopy (DESI-MS) analysis of swabs to predict vaginal microbiota. (Pending UK filing March 2019) pending, and a patent PCT/GB2019/Circulating miRNAs predictive of IUGR (Pending UK filing March 2019) pending. SCB reports grants from other from NIHR, NETSCC, HTA during the conduct of the study and personal fees and other from University of Copenhagen, Wellcome Trust, NIHR Global Health Research and French Cancer Institute outside the submitted work. SJS reports grants from NIHR HTA during the conduct of the study; being a member of the NIHR HTA General committee and receiving received other research funding from the NIHR (14/32/01 QUIDS), Wellcome Trust (209560/Z/17/Z) and CSO During the course of the study. SJS is a member of PLOS Medicine’s Editorial Board. NM reports personal fees from Shire-Takeda, personal fees from Novartis, personal fees from Glaxo-Smith-Klein, outside the submitted work. JN reports grants from University of Aberdeen and University of Edinburgh during the conduct of the study; and Membership of the following NIHR boards: CPR decision making committee; HTA Commissioning Board; HTA Commissioning Sub-Board (EOI); HTA Funding Boards Policy Group; HTA General Board; HTA Post-Board funding teleconference; NIHR CTU Standing Advisory Committee; NIHR HTA & EME Editorial Board; Pre-exposure Prophylaxis Impact Review Panel. ST has received grant funding from NIHR, other government and charity organisations. He provides commercial consultancy advice which has received financial compensation.