Abnormally invasive placenta—prevalence, risk factors and antenatal suspicion: results from a large population-based pregnancy cohort study in the Nordic countries

L. Thurn, P. G. Lindqvist^*, M. Jakobsson, L B Colmorn, Kari Klungsoyr, Ragnheiður I Bjarnadóttir, A. M. Tapper, P. E. Børdahl, K. Gottvall, K. B. Petersen, L. Krebs, M Gissler, J. Langhoff-Roos, Karin Källen

^*Corresponding author for this work