In this multicenter, randomized trial, we compared preoperative biliary drainage with surgery alone for patients with cancer of the pancreatic head.
在这项多中心的随机(对照)研究中，我们对胰头癌患者术前胆道引流与直接手术进行了比较。
The ACCP guidelines do not support the use of aspirin for prophylaxis following TJA, because this drug has not been extensively evaluated in multicenter randomized trials.
ACCP指南不支持在TJA术后使用阿斯匹林预防血栓性疾病，因为该药还没有在多中心随机试验中得到进一步评估。
Considering the limited number of patients in this study, our results need, however, to be validated on a larger number of patients, probably in a multicenter study.
考虑到在这项研究中病例数量有限，我们的结果可能需要多中心研究中更大数目的病人来验证。
This study was a secondary analysis of the Alpha Omega Trial, a multicenter study involving 32 hospitals in the Netherlands.
这项研究是阿尔法欧米茄试验的二次分析，是包括荷兰的32家医院的多中心研究。
Setting: This was a multicenter, international study conducted in private or institutional practices.
设置：这是一项在私人诊断和公立医院内进行的一项国际多中心研究。
Setting: This was a multicenter, international study conducted in private or institutional practices.
设置：这是一项在私人诊断和公立医院内进行的一项国际多中心研究。
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