Population, Intervention, Comparison, Outcomes and Study (PICOS) design as a framework to formulate eligibility criteria in systematic reviews

Dear editor, We read with great interest the review entitled ‘Paracetamol vs other analgesia in adult patients with minor musculoskeletal injuries: a systematic review’,1 published in the Emergency Medicine Journal . Although the authors have stated that they followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, there is a methodological issue regarding the study discussed in this letter, which …