Table I.

Structure of a reviewer comment to be forwarded to authors

Section	Notes
Introductory line	Summarizes the overall impression about the manuscript validity and implications
Evaluation of the title, abstract and keywords	Evaluates the title correctness and completeness, inclusion of all relevant keywords, study design terms, information load, and relevance of the abstract
Major comments	Specifically analyses each manuscript part in line with available research reporting standards, supports all suggestions with solid evidence, weighs novelty of hypotheses and methodological rigour, highlights the choice of study design, points to missing/incomplete ethics approval statements, rights to re-use graphics, accuracy and completeness of statistical analyses, professionalism of bibliographic searches and inclusion of updated and relevant references
Minor comments	Identifies language mistakes, typos, inappropriate format of graphics and references, length of texts and tables, use of supplementary material, unusual sections and order, completeness of scholarly contribution, conflict of interest, and funding statements
Concluding remarks	Reflects on take-home messages and implications