Genome-wide association meta-analysis identifies five loci associated with postpartum hemorrhage by Westergaard, D, Steinthorsdottir, V, Stefansdottir, L, Rohde, PD, Wu, X, Geller, F, Tyrmi, J, Havulinna, AS, Solé-Navais, P, Flatley, C, Ostrowski, SR, Pedersen, OB, Erikstrup, C, Sørensen, E, Mikkelsen, C, Bruun, MT, Aagaard Jensen, B, Brodersen, T, Ullum, H, Magnus, P, Andreassen, OA, Njolstad, PR, Kolte, AM, Krebs, L, Lindgren, CM