The spherical sac: a suggestive early sign of abdominal pregnancy?
Cheung
Y T
YT
Kwok
P C
PC
Metreweli
C
C
D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D011269:Pregnancy, Abdominal / Q000175:diagnosis*; D014463:Ultrasonography