Current progress in early pregnancy investigation.
Stemmer
S M
SM
D000026:Abortion, Habitual / Q000000981:diagnostic imaging / Q000517:prevention & control; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging; D005333:Fetus / Q000002:abnormalities; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging; D016216:Ultrasonography, Prenatal / Q000379:methods* / Q000639:trends*