title: [DEGUM grade I quality standards in obstetric ultrasound diagnosis during the 19th-22nd week of pregnancy].
authors.affiliation: Zentrum f. Geburtsh. u. Frauenheilk., Abt. Geburtshilfe u. Pränat. Medizin, Universitätsklinikum Bonn.
authors.forename: K-H
authors.initials: KH
authors.lastname: Eichhorn
authors.forename: T
authors.initials: T
authors.lastname: Schramm
authors.forename: R
authors.initials: R
authors.lastname: Bald
authors.forename: M
authors.initials: M
authors.lastname: Hansmann
authors.forename: U
authors.initials: U
authors.lastname: Gembruch
mesh_terms: D005260:Female; D005858:Germany; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011785:Quality Assurance, Health Care; D016216:Ultrasonography, Prenatal / Q000592:standards*