Design: Prospective randomized study.
设计：前瞻性随机研究。
Design: This is a prospective randomized study.
研究设计：前瞻性随机对照研究。
DESIGN: Prospective randomized study. SETTING: Fertility center.
设计：前瞻随机研究。场所：生育中心。
This study now demonstrates such an effect for a selective COX-2 inhibitor in a placebo-controlled randomized study.
现在的这项研究证实了在安慰剂作为对照的随机实验中，一种选择性COX - 2抑制剂也有这种效应。
Until today's publication, no rigorous randomized study had shown whether community health workers could safely and effectively treat cases of severe pneumonia at home.
直到今天这篇文章发表，还没有严格的随机试验显示社区卫生工作人员是否可以安全有效的在家中治疗严重的肺炎。
OBJECTIVE: We assessed in a randomized study the feasibility and efficacy of awake video-assisted thoracoscopic bullectomy with pleural abrasion to treat spontaneous pneumothorax.
目的：我们在一项随机研究中评估清醒下胸腔镜肺大疱伴胸膜磨损手术治疗自发性气胸的可行性及有效性。
Men in the screening group in the European Randomized Study of Screening for Prostate Cancer were 20% less likely than those in the control group to die from prostate cancer.
欧洲前列腺癌筛查随机对照研究中，筛查组中死于前列腺癌的患者的比例比对照组低将近20%。
Prophylaxis of Graft-Versus-Host Disease in Unrelated Donor Transplantation With Pentostatin, Tacrolimus, and Mini-Methotrexate: A Phase I/II Controlled, Adaptively Randomized Study.
在不相干的捐赠者移植中，使用喷司他丁，他克莫司和微型甲氨蝶呤预防移植物抗宿主疾病：一项I/II期对照，适应性随机研究。
Prophylaxis of Graft-Versus-Host Disease in Unrelated Donor Transplantation With Pentostatin, Tacrolimus, and Mini-Methotrexate: A Phase I/II Controlled, Adaptively Randomized Study.
在不相干的捐赠者移植中，使用喷司他丁，他克莫司和微型甲氨蝶呤预防移植物抗宿主疾病：一项I/II期对照，适应性随机研究。
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