很多神经性病变都有遗传性，很多病例都可能有阳性家族史而确立诊断。
A large number of neurologic disorders are hereditary, and a positive family history may establish the diagnosis in many instances.
结论中年组冠心病病人吸烟史、阳性家族史、高脂血症为主要危险因素。
Conclusion Smoking, positive family history and hyperlipemia are the main risk factors in middle-aged coronary patients.
结论：阳性家族史、慢性应激和社会支持不足是老年抑郁症发病的重要危险因素。
Psychiatric family history, chronic stress, and deficient social support are risk factors for depression in the elderly.
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