原发性癫痫无法进行预防。
目的为了摸清并掌握陕北原发性肝癌(HCC)的主要危险因素，探索病因模式，为采取有效预防措施提供科学依据。
AIM to explore major risk factors and etiological patterns of hepatocellular carcinoma (HCC) in North Shaanxi so as to provide a scientific basis for effective prevention of HCC.
结论（1）全科团队服务模式能够有效地控制社区原发性高血压，是进行高血压二级预防的新型社区干预模式；
Conclusion (1) The general practice team services could control hypertension in community effectively, which is a new intervention pattern for the secondary prevention of hypertension.
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