68
Participants
Start Date
September 30, 2014
Primary Completion Date
October 31, 2015
Study Completion Date
October 31, 2015
Budesonide nasal spray
64mcg/1putt, 1 putt/nostril,b.i.d
Placebo
1 putt/nostril,b.i.d
Guangzhou institute of respiratory disease, Guangzhou
Guangzhou Institute of Respiratory Disease
OTHER