Related Experiment Video

Updated: Aug 11, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
14:56

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)

Published on: January 27, 2010

The second stage of labor: factors influencing duration

J M Piper1, D R Bolling, E R Newton

  • 1Department of Obstetrics and Gynecology, University of Texas Health Science Center, San Antonio 78284-7836.

American Journal of Obstetrics and Gynecology
|October 1, 1991
PubMed

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