title: Influence of methodology upon the identification of potential core outcomes: recommendations for core outcome set developers are needed.
authors.affiliation: Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK.
authors.forename: Jmn
authors.initials: J
authors.lastname: Duffy
authors.affiliation: Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK.
authors.forename: R J
authors.initials: RJ
authors.lastname: McManus
mesh_terms: D003697:Delphi Technique; D023381:Endpoint Determination; D005260:Female; D006801:Humans; D011225:Pre-Eclampsia; D011247:Pregnancy; D011256:Pregnancy Outcome; D014807:Vitamin D
chemical_list: D014807:Vitamin D