[Polemic in fetal echocardiography: has the "golf-ball" sign any clinical significance?].
Lopes
M A
MA
D009202:Cardiomyopathies / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D010210:Papillary Muscles / Q000000981:diagnostic imaging*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal