DESIGN: Randomized case control study.
设计：随机对照研究。
DESIGN: Randomized case control study to patients based on diagnosis SETTING: department of general diseases, rehabilitation room and ultrasound department of a university hospital.
设计：以患者为研究对象，以诊断为依据的随机对照研究。单位：一所大学医院的综合科、康复室及超声波室联合进行的课题研究。
Inclusion criteria: Typical literatures, basic experimental research that restrictedly and scientifically designed, prospective randomized clinical research as well as case control study.
纳入标准：经典文献、经严格科学设计的基础实验研究、前瞻性随机性临床研究及病例对照研究。
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