* Concordance-analysis and evaluation of different diagnostic algorithms used in first trimester screening for late-onset preeclampsia. Schaller S, Knippel AJ, Verde PE, Kozlowski P. Hypertens Pregnancy. 2020 May;39(2):172-185.
* Isolated Echogenic Cardiac Focus: Assessing Association with Trisomy 21 by Combining Results from a Prenatal Center with a Bayesian Meta-Analysis. Wrede E, Knippel AJ, Verde PE, Hammer R, Kozlowski P. Ultrasound Int Open. 2019 Nov;5(3):E98-E106.
* A Bayesian risk analysis for Trisomy 21 in isolated choroid plexus cyst: combining a prenatal database with a meta-analysis. Kürten C, Knippel A, Verde P, Kozlowski P. J Matern Fetal Neonatal Med. 2019 Jun 11:1-9.