But those studies had some methodological and study design flaws, which will be avoided in this new, carefully planned and controlled, prospective randomized clinical study.

但是，这些研究在研究方法和研究设计上有一定的缺陷，本次研究将极力避免这样的缺陷，而进行精心策划和控制和前瞻性的临床研究。

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Impact of long-term enteral nutrition on clinical and endoscopic recurrence after resection for Crohn's disease: a prospective, non-randomized, parallel, controlled study.

长期肠内营养对克罗恩病临床或内镜切除术后复发的影响：前瞻性，非随机，平行对照研究。

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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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