Article Type Description Word Limit Abstract
Original Research Primary research reporting novel findings from experimental, clinical, or epidemiological studies. Must include structured abstract, methods, results, and discussion. 8,000 Structured
Review Comprehensive synthesis of published evidence on a defined topic. Must include systematic literature search methodology. 12,000 Unstructured
Systematic Review Systematic review with or without meta-analysis, following PRISMA guidelines. PROSPERO registration required. 10,000 Structured
Case Report Clinical case or case series with educational value. Must include patient consent statement. CARE guidelines encouraged. 3,000 Unstructured
Clinical Trial Primary trial results. CONSORT checklist required. Clinical trial registration number must be included in the abstract. 8,000 Structured
Opinion / Commentary Expert perspective on current issues, controversies, or emerging topics in the field. Invited or submitted. 2,000 None
Letter to the Editor Brief scientific correspondence responding to a recently published article or reporting a preliminary finding. 800 None

Word limits are for the main text excluding abstract, references, tables, and figure legends. Individual journal scopes may impose stricter limits — refer to the specific journal's author guidelines.

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