TY - STAND AU - O’Gorman, N; Wright, D; Poon, L C TI - Accuracy of competing risks model in screening for pre-eclampsia by maternal factors and biomarkers at 11–13 weeks’ gestation PY - 2017 L3 - PubMed-ID: 33378543 N1 - Ultrasound Obstet Gynecol ER -