120
Participants
Start Date
April 30, 2014
Primary Completion Date
June 30, 2015
Study Completion Date
June 30, 2015
0.25 sufentanil
with different dosage
0.5µg/ml sufentanil
0.5µg/ml sufentanil
0.1% ropivacaine
0.1% ropivacaine
Shanghai Jiao Tong University School of Medicine
OTHER
Fudan University
OTHER