Fetal phallus 'erection' interfering with the sonographic determination of fetal gender in the first trimester.
Pedreira
D A
DA
Yamasaki
A
A
Czeresnia
C E
CE
D000886:Anthropometry; D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D010410:Penile Erection; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011446:Prospective Studies; D012732:Sex Determination Analysis; D016216:Ultrasonography, Prenatal