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