Instructions for Authors

Comprehensive guidelines for preparing and submitting your gastroenterology and digestive disorders research manuscripts to JDDD.

Manuscripts should be prepared in Microsoft Word format with standard formatting. Use twelve-point Times New Roman or Arial font throughout with double-spacing and one-inch margins. Number all pages consecutively and include line numbers to facilitate peer review. Structure your manuscript according to the appropriate article type guidelines described below.

JDDD publishes several article types to accommodate different research outputs in gastroenterology and hepatology.

• Original Research Articles presenting novel findings with no word limit; typically five thousand to eight thousand words
• Review Articles synthesizing current knowledge; typically six thousand to ten thousand words with systematic approach
• Case Reports describing instructive clinical cases; typically two thousand to three thousand words with patient consent
• Short Communications reporting preliminary findings; maximum two thousand words with rapid publication timeline
• Editorials and commentaries invited by the editor on important digestive disease topics or recent publications

Format references using Vancouver style with numbered citations in the order of appearance. Include complete author names for works with six or fewer authors. Use et al after the sixth author for works exceeding six authors. Include DOIs where available for all referenced gastroenterology publications. Ensure all citations are complete and accurate.

Submit high-resolution figures as separate files in TIFF, JPEG, or PNG format with minimum three hundred dpi resolution. Provide descriptive captions explaining the content and significance of each figure to digestive disease understanding. Tables should be created in Word format with clear column headers and explanatory footnotes.

All research involving human subjects must have institutional review board approval and provide evidence of informed consent. Animal studies must comply with ARRIVE guidelines and institutional animal care requirements. Authors must disclose all conflicts of interest and funding sources. Clinical trials must be registered in a public registry and include the registration number. Adherence to CONSORT, STROBE, PRISMA, or other relevant reporting guidelines is required for gastroenterology research.

Submit manuscripts through our online portal at ManuscriptZone. Prepare a cover letter introducing your digestive disease research, suggesting potential reviewers with expertise in your specialty area, and confirming that the manuscript is not under consideration elsewhere. Complete the submission checklist to ensure all components are included including declarations of author contributions, conflicts of interest, ethics approval, and data availability statements.

Initial editorial assessment evaluates scope, quality, and adherence to guidelines within one week. Manuscripts meeting criteria undergo single-blind peer review by gastroenterology experts with decision typically within two to four weeks. Authors receive detailed reviewer comments and editorial decision with opportunity to revise and respond to concerns. Revisions should address all reviewer comments with point-by-point responses. Authors should highlight changes in the revised manuscript to facilitate efficient re-review by gastroenterology evaluators.

Authors may submit supplementary files including additional figures, tables, datasets, videos, and detailed protocols that support the main manuscript findings. Supplementary materials undergo editorial review but not formal peer review. All supplementary files should be referenced in the main text with descriptive titles and legends. Video files should be submitted in standard formats compatible with web browsers. Large datasets may be deposited in appropriate public repositories with links provided in the data availability statement.

Manuscripts should be written in clear, grammatically correct English appropriate for an international audience of gastroenterology researchers and clinicians. Authors whose first language is not English are encouraged to have their manuscripts professionally edited before submission. JDDD members receive complimentary language editing services. Non-member authors may use our fee-based editing service or any professional editing provider of their choice. The journal reserves the right to request language editing if manuscript clarity is insufficient.

All manuscripts must include declarations confirming ethical compliance, conflicts of interest disclosure, funding acknowledgment, author contributions using CRediT taxonomy, and data availability statements. Authors must confirm that the work is original and has not been published elsewhere. Corresponding authors must confirm that all listed authors have approved the submitted version and agree to be accountable for their contributions. Ghost authorship and gift authorship are not permitted.

Upon acceptance, authors receive proofs for review within one week. Corrections should be limited to typographical errors and factual mistakes. Significant content changes are not permitted at proof stage. Authors confirm proofs within forty-eight hours. Articles are published online within one week of proof approval and payment confirmation. Authors receive PDF copies and can share published work according to the CC BY 4.0 license terms.