title: [The necessity of electronically updated meta-analyses: Doppler ultrasound in obstetrics as an example].
authors.affiliation: Det Nordiske Cochrane Center, H:S Rigshospitalet, København.
authors.forename: O
authors.initials: O
authors.lastname: Olsen
authors.forename: P C
authors.initials: PC
authors.lastname: Gøtzsche
mesh_terms: D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D015201:Meta-Analysis as Topic; D011247:Pregnancy; D016216:Ultrasonography, Prenatal