180
Participants
Start Date
August 31, 2014
Primary Completion Date
December 31, 2014
Study Completion Date
February 28, 2015
placebo
placebo of levo phencynonate hydrochloride
levo phencynonate hydrochloride
levo phencynonate hydrochloride
Qingdao municipal hospital, Qingdao
Sihuan Pharmaceutical Holdings Group Ltd.
INDUSTRY