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Up-Down Sequential Allocation Technique to Investigate the Influence of Opioids on the Efficacy of Epidural Local Anesthetics in Labor Pain
Columb, Malachy O., Polley, Linda S.Volume:
90
Journal:
Anesthesiology
DOI:
10.1097/00000542-199906000-00044
Date:
June, 1999
File:
PDF, 1.31 MB
1999