Landman, A J E M C 2023, ' Aspirin for the prevention of spontaneous preterm birth ', PhD, Vrije Universiteit Amsterdam, s.l. . https://doi.org/10.5463/thesis.10
Vollgraff Heidweiller-Schreurs, C A 2019, ' The role of middle cerebral and umbilical artery Doppler ultrasound in monitoring the small fetus ', Doctor of Philosophy, Vrije Universiteit Amsterdam, Netherlands . < http://hdl.handle.net/1871.1/b43bd6fa-ff14-4bb6-9511-24235751583e > Schreurs, C A 2019, ' The role of middle cerebral and umbilical artery Doppler ultrasound in monitoring the small fetus ', PhD, Vrije Universiteit Amsterdam .