350
Participants
Start Date
May 31, 2015
Primary Completion Date
December 31, 2017
Study Completion Date
December 31, 2017
Qinggongshoutao Bolus
Qinggongshoutao bolus and placebo identified to Ginkgo Biloba Extract 761
Ginkgo Biloba Extract 761
Placebo identified to Qinggongshoutao bolus and Ginkgo Biloba Extract 761
Placebos
Placebo identified to Qinggongshoutao Bolus and placebo identified to Ginkgo biloba
Dongzhimen Hospital ,Beijing University of Chinese Medicine, Beijing
Dongzhimen Hospital, Beijing
OTHER