Ultrasonography and perinatal mortality rates.
Shirley
I M
IM
Bottomley
F
F
D000028:Abortion, Induced; D000013:Congenital Abnormalities / Q000000981:diagnostic imaging; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D011247:Pregnancy; D016216:Ultrasonography, Prenatal