Risk of recurrent abortion after appearance of a chorionic sac or heart rate on vaginal ultrasound.
R P
RP
Dickey
R F
RF
Gasser
T T
TT
Olar
S N
SN
Taylor
D N
DN
Curole
P H
PH
Rye
E M
EM
Matulich
D000026:Abortion, Habitual / Q000000981:diagnostic imaging*; D002823:Chorion / Q000000981:diagnostic imaging*; D018568:Crown-Rump Length; D005260:Female; D006340:Heart Rate, Fetal; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome; D012307:Risk Factors; D016216:Ultrasonography, Prenatal