So there were, in fact, 43 cases, among whom were 20 healthy people and 23 patients. Patients were followed-up for 3 months after operation and classified to survival group(15 case) and death group(8 case).

• 实际研究对象共43例,正常组20例,病变组23例,其中术后随访3个月,生存组15例、死亡组8例。