Cervical length may change during ultrasonographic examination.
Sonek
J
J
Blumenfeld
M
M
Foley
M
M
Johnson
F
F
Iams
J
J
D002584:Cervix Uteri / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography