Key problem and countermeasures on modern ization of Chinese materia medica Methodological thoughts on clinical efficacy evaluation with multiple clinical trials Overview in establishing animal models against ischemic cerebrocardiac disease and thinking about efficacy evaluation of traditional Chinese medicine EVALUATION OF THE EFFICACY OF PYRETHROIDS RESISTANCE MANAGEMENT IN COTTON BOLLWORM IN HEBEI PROVINCE Study on methodology for evaluating clinical efficacy of traditional Tibetan medicine