Efficacy and safety of Naoxintong capsule for treating chronic stable angina: study protocol for a randomized controlled trial
Abstract Background Cardiovascular disease Descaling Pipe Spout is the leading cause of mortality and morbidity worldwide, Chronic stable angina (CSA) is the main symptom of myocardial ischemia, causes increased risk of major cardiovascular events such as sudden cardiac death and myocardial infarction.Naoxintong (NXT) capsule is a classical traditi