Total characters limit for the abstract: 3000

Title: Is the title descriptive of the abstract? (Character limit: 150)

Objective: What is the question that the study answers, or the hypothesis that it tests? (Character limit: 600)

Methods: What is the study design? Indicate randomization, masking, and whether data collection was retrospective or prospective. Identify the patients, including selection and exclusion criteria, and numbers. Indicate intervention, procedures and measurement. (Character limit: 750)

Results: What are the outcomes and measurements? Include their statistical significance, if appropriate. (Character limit: 750)

Conclusion: What are the conclusions? Describe the clinical pertinence and value. (Character limit:750)