Ultrasound in Obstetrics and Gynecology · 2000 · 43 citations · 2 references
Mid-trimester amniocentesis is not a painful procedure. Local anesthesia does not affect pain experience during amniocentesis.
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The measurement of clinical pain intensity: a comparison of six methods
Mark P. Jensen, Paul Karoly, Sanford Braver · Pain · 1986 · 3.2K citations