The Nordic Obstetric Surveillance Study: a study of complete uterine rupture, abnormally invasive placenta, peripartum hysterectomy, and severe blood loss at delivery

Lotte B. Colmorn, Kathrine B Petersen, Maija Jakobsson, Pelle G Lindqvist, Kari Klungsoyr, Karin Källen, Ragnheidur I. Bjarnadottir, Anna Maija Tapper, Per E. Børdahl, Karin Gottvall, Lars Thurn, Mika Gissler, Lone Krebs, Jens Langhoff-Roos