A new ultrasonic method for transabdominal amniocentesis.
D000005:Abdomen; D000649:Amniocentesis; D005260:Female; D006801:Humans; D008722:Methods; D009339:Needles; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011677:Punctures; D014159:Transducers; D014463:Ultrasonography