[Diagnostic value of ultrasound in fetal umbilical cord coiling around the head: report of 3 cases].
Qing-kang
QK
Chen
Lei-rong
LR
Tian
D000328:Adult; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D011247:Pregnancy; D014102:Torsion Abnormality; D016216:Ultrasonography, Prenatal; D014470:Umbilical Cord / Q000000981:diagnostic imaging*