The risk of recurrent preterm birth after spontaneous preterm birth between 16-28 weeks of gestation: A national observational cohort study
Annabelle L. VAN GILSa,c, Anita C. RAVELLIc,d, Esme I. KAMPHUISa,c, Brenda M. KAZEMIERc,e, Eva PAJKRTa,c, Martijn A. OUDIJKb,c, Marjon A. DE BOERb,c
  1. Amsterdam UMC location University of Amsterdam, Department. of Obstetrics and Gynecology, Meibergdreef 9, Amsterdam, The Netherlands
  2. Amsterdam UMC, location Vrije Universiteit Amsterdam, Department. of Obstetrics and Gynecology, De Boelelaan 1117, Amsterdam, The Netherlands
  3. Amsterdam Reproduction and Development Research Institute, Amsterdam, The Netherlands
  4. Amsterdam UMC, University of Amsterdam, Department of Medical Informatics, Meibergdreef 9, Amsterdam, the Netherlands.
  5. Wilhelmina’s Children Hospital, Department of Obstetrics, UMC Utrecht, Utrecht, the Netherlands.
Corresponding author:Annabelle L. van Gils 0031-638068648 a.l.vangils@amsterdamumc.nl Meibergdreef 9, 1105 AZ Amsterdam
Short title: Recurrence risk after spontaneous PTB from 16 weeks onwards.