NIPTeR: an R package for fast and accurate trisomy prediction in non-invasive prenatal testing. - Lennart F. Johansson; Hendrik A. de Weerd; Eddy N. de Boer; Freerk van Dijk; Gerard J. te Meerman; Rolf Sijmons; Birgit Sikkema-Raddatz; Morris A. Swertz (BMC Bioinform., 2018)