The aggressive use of primary prophylaxis seems to have made an impact on the number of cases of variceal hemorrhage cases we are seeing.
积极使用预防措施似乎对静脉曲张出血病例有影响。
Primary prophylaxis with lamivudine of hepatitis B virus reactivation in chronic HbsAg carriers with lymphoid malignancies treated with chemotherapy.
B型肝炎病毒流行病学，疾病负担，治疗，以及目前和新出现的预防和控制措施。
The present systematic review updates and reassesses the benefits and harms of vitamin D supplementation used in primary and secondary prophylaxis of mortality.
现行的系统性回顾已更新且重新评估了维生素 D 的补充在初级和次级预防死亡率中的好处与坏处。
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