Some factors affecting the fetal heart rate.
HELLMAN
L M
LM
JOHNSON
H L
HL
TOLLES
W E
WE
JONES
E H
EH
D005260:Female; D005333:Fetus / Q000502:physiology*; D006321:Heart / Q000502:physiology*; D006340:Heart Rate, Fetal; D006801:Humans; D011247:Pregnancy
FETUS/physiology; HEART/physiology