Retraction statement: Role of resolvin D1 in psoriasis before and after narrowband ultraviolet B phototherapy: A case–control study
Abstract
Retraction: Elmasry, MF, Hassan, E, Rashed, LA, Abdel Halim, DM. Role of resolvin D1 in psoriasis before and after narrowband ultraviolet B phototherapy: A case-control study. Dermatologic Therapy. 2021; 34:e14879 (https://doi.org/10.1111/dth.14879). The above article, published online on 14 February 2021 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal's Editor-in-Chief, Dr Robert Schwartz, and Wiley Periodicals, LLC. The retraction has been agreed due to errors within the methodology section. The authors previously indicated that resolvin D1 was measured using a PCR technique, when it was actually an ELISA test that was used. As a result, significant changes to the methodology section and corresponding updates to tables and figures are needed. Due to the number of changes needed, the journal is unable to determine the veracity of the authors' previously reported results and conclusions and so has taken the decision to retract the article.
How strong is the evidence?
Evidence Hub reads this as a case-control. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause.
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