Protective effect of Luotai Injection on ISO-induced experimental myocardial ischemia of gerbil model and its comparison with of rat model Effect of YIXINNING on ECG and serum hydrocortisone in restrained stress rats Effects of Compound Danshen Dropping Pill on electrocardiogram in isolated hearts of guinea pigs Effects of Compound Danshen Dropping Pill on electrocardiogram in isolated hearts of guinea pigs