In addition, the addition of surfactant favored the reduced dosage of relatively expensive polyethylene glycol (PEG 400), and the cost of liquefaction could thus be reduced.

另外，表面活性剂的存在还能减少价格较贵的聚乙二醇400的用量，因此降低了液化的成本。

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Cessation rates were even better among patients who gradually reduced their dosage under the supervision of a physician.

而那些在医生监督下逐渐减量服用的病人的停药率更高。

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Would it be beneficial for patients to extend treatment when the dosage of ribavirin is reduced?

当利巴韦林的用量减少了的时候，延长治疗对所有患者都有益处么。

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Dr Margherita Cantornas, who led the study at Penn State University in the US, said that the anti-inflammatory properties of vitamin D could allow the dosage of steroids to be reduced, cutting the side effects.

BBC: Bowel disease linked to vitamin