美国政府网站上说南京医学院做双盲试验已完成

好像也是一个有争议的题目。美国政府网站上说南京医学院主持做双盲试验已完成。不知道结论是什么。看上去咬牙抗痛更保险些。
http://clinicaltrials.gov/show/NCT00987441
Epidural Labor Analgesia and Infant Neurobehavior (ELAIN)
This study has been completed.
Sponsor:
Nanjing Medical University
Information provided by:
Nanjing Medical University
ClinicalTrials.gov Identifier:
NCT00987441
First received: September 30, 2009
Last updated: July 26, 2011
Last verified: July 2011
History of Changes