title: Methodological concerns regarding 'Assessment of von Willebrand disease as a risk factor for primary postpartum haemorrhage'.
authors: R
authors: R
authors: Modi
authors: G
authors: G
authors: McGwin
mesh_terms: D005260:Female; D006801:Humans; D006473:Postpartum Hemorrhage / Q000209:etiology*; D011247:Pregnancy; D014842:von Willebrand Diseases / Q000150:complications*