What do you perceive as the greatest strength of this study?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8165252/:1) What did you find most interesting about this article? It could be something you read in the literature review OR the results section.2) What do you perceive as the greatest strength of this study?3) What do you perceive as the greatest weakness of the study?4) If you could design a similar study, what would you do differently?

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