Efficacy and safety of short-term therapy with indigo naturalis for ulcerative colitis: An investigator-initiated multicenter double-blind clinical trial.

PLoS One · 2020 · PMC7644062 · PMID 33151988

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may be significantno p-value reported

It may be significant to study the optimal treatment course and dosage of IN for UC on the premise of minimizing the occurrence of severe adverse reactions.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.