1
Participants
Start Date
August 31, 2016
Primary Completion Date
March 31, 2017
Study Completion Date
March 31, 2018
3 days after
in 3 days after RIRS.
10days after
in10 days after RIRS.
EPVL performed in30days after RIRS
Patients in Group C undergo EPVL in630days after RIRS.
The Second Affiliated Hospital of Zhengzhou University, Zhengzhou
Second Affiliated Hospital of Zhengzhou University
OTHER