Methods A total of 1980 consecutive patients were included in this prospective clinical study.

方法对1980例LC的难度和术前腹部超声进行临床研究。

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Method In the prospective clinical study, the patients with severe brain-injury were randomly divided into early enteral feeding group(EEFg), and total parental nutrition group(TPNg).

方法将重症脑外伤病人随机分为早期胃肠道营养组（EEF组）和早期完全胃肠外营养组（TPN组），对比营养支持前后两组血糖及胰岛素水平的差异。

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Study Design. Prospective clinical series with comparison to retrospectively collected data.

研究设计：与回顾性收集数据对比的前瞻性临床序列。

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For one, the groups noted the analysis is a retrospective study, not a prospective, randomized controlled clinical trial, which many regard as a gold standard for ferreting out safety concerns.

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