How to improve your amniocentesis technique.
D000649:Amniocentesis / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D009339:Needles; D010920:Placenta; D011247:Pregnancy; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography