124
Participants
Start Date
September 30, 2011
Primary Completion Date
June 30, 2013
Study Completion Date
August 31, 2013
Ginkgo biloba extract
400mg/day, twice a day, 10 weeks
Placebo
twice a day, 10 weeks
Beijing HuiLongGuan Hospital, Beijing
Beijing HuiLongGuan Hospital
OTHER