Efficacy and safety of Ginkgo biloba dropping pills in the treatment of coronary heart disease with stable angina pectoris and depression: study protocol for a randomised, placebo-controlled, parallel-group, double-blind and multicentre clinical trial

Abstract

BackgroundCoronary heart disease(CHD) with stable angina pectoris is a common cardiovascular disease. It has been reported that 10%–81.4% of these patients suffer from psychological conditions,such as depression, which has been...