title: Re: A direct method for ultrasound prediction of day of delivery: a new, population-based approach. Problems of accounting for a retrospective selection.
authors.forename: T
authors.initials: T
authors.lastname: Kiserud
authors.forename: S L
authors.initials: SL
authors.lastname: Johnsen
authors.forename: S
authors.initials: S
authors.lastname: Rasmussen
mesh_terms: D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D010294:Parietal Bone / Q000000981:diagnostic imaging*; D011237:Predictive Value of Tests; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012016:Reference Values; D012189:Retrospective Studies; D013997:Time Factors; D016216:Ultrasonography, Prenatal / Q000379:methods*