In some trials, whole people are randomized, but multiple parts of the body receive the same treatment and the number of body parts is used as the denominator in the analysis.
在一些试验中，整个人是随机的，但是身体不同部位受同种治疗，这些部位的数目在分析中被用作分母。
2
Indeed, there are a number of small non randomized studies published on bone marrow therapy to promote liver regeneration from a number of groups around the world.
事实上，全世界已有多个小组发表了一些小型非随机研究，结果显示骨髓治疗可用于促进肝脏再生。
3
It may be argued that the number of clinical randomized trials and included patients for examining restricted intravenous fluid therapy are too few to alter current practice.