Bet, B B, Wielart, L, Ravelli, A C J, van Wely, M, van Leeuwen, E & Pajkrt, E 2023, ' Financial contribution as reason to opt out of non-invasive prenatal testing ', European Journal of Obstetrics and Gynecology and Reproductive Biology, vol. 287, pp. 130-136 . https://doi.org/10.1016/j.ejogrb.2023.06.009