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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.

• A Novel Decision Aid for Colectomy in Diverticulitis: Cluster Randomized Pilot and Feasibility Study1 passage
• A Randomized Control Trial of Preoperative Oral Antibiotics as Adjunct Therapy to Systemic Antibiotics for Preventing Surgical Site Infection in Clean Contaminated, Contaminated, and Dirty Type of Colorectal Surgeries1 passage
• A Randomized Controlled Trial of Topical Analgesia Posthemorrhoidectomy (TAPH Trial)1 passage
• Antibiotic Treatment Has No Influence on Anal Fistula Formation and Recurrent Perianal Abscess After Incision and Drainage of Cryptogenic Perianal Abscess: A Randomized Single-Blinded Prospective Study1 passage
• Antibiotics Versus No Antibiotics for Acute Uncomplicated Diverticulitis: A Systematic Review and Meta-analysis1 passage
• Comparative Study of Diluted Hydrogen Peroxide and Sulfur Hexafluoride in the Contrast-Enhanced Ultrasound Assessment of Anal Fistulas1 passage
• Comparison of Curettage Plus Platelet-Rich Plasma Gel and Curettage Plus Phenol Application in Treatment of Pilonidal Sinus Disease: A Randomized Trial1 passage
• Comparison of Rubber Band Ligation and Hemorrhoidectomy in Patients With Symptomatic Hemorrhoids Grade III: A Multicenter, Open-Label, Randomized Controlled Noninferiority Trial1 passage
• Cost-Effectiveness of Rubber Band Ligation Versus Hemorrhoidectomy for the Treatment of Grade III Hemorrhoids: Analysis Using Evidence From the HOLLAND Randomized Controlled Trial25 passages
• Does Coffee Intake Reduce Postoperative Ileus After Laparoscopic Elective Colorectal Surgery? A Prospective, Randomized Controlled Study: The Coffee Study1 passage
• Drainage Seton Versus External Anal Sphincter-Sparing Seton After Rerouting of the Fistula Tract in the Treatment of Complex Anal Fistula: A Randomized Controlled Trial1 passage
• Early Versus Late Preventive Ileostomy Closure Following Colorectal Surgery: Systematic Review and Meta-analysis With Trial Sequential Analysis of Randomized Controlled Trials1 passage
• Effect of Sublay Preventive Mesh for Terminal Colostomy on Symptoms and Quality of Life in Patients With Parastomal Hernia: A Post Hoc Analysis of the GRECCAR 7 Cohort1 passage
• Efficacy and Safety of Treatment of Complex Idiopathic Fistula-in-Ano Using Autologous Centrifuged Adipose Tissue Containing Progenitor Cells: A Randomized Controlled Trial1 passage
• Efficacy of Micronized Purified Flavonoid Fraction in the Posthemorrhoidectomy Period Trial: Open-Label Randomized Controlled Trial1 passage
• Emergency Surgery in Acute Diverticulitis: A Systematic Review1 passage
• Enhanced Recovery After Surgery in Older Adults Undergoing Colorectal Surgery: A Systematic Review and Meta-analysis of Randomized Controlled Trials1 passage
• Evaluation of TU-100 (Daikenchuto), a Traditional Japanese Kampo Medicine, as an Adjunct to Enhanced Recovery After Surgery, for Acceleration of Gastrointestinal Recovery After Bowel Resection: Results of a Proof-of-Concept, Phase 2, Randomized, Double-Blinded, Placebo-Controlled Trial1 passage
• Five-Year Follow-up of the Double-Blinded Randomized Controlled Trial Comparing Laser Hemorrhoidoplasty With Sutured Mucopexy and Excisional Hemorrhoidectomy1 passage
• Fragility of Statistically Significant Outcomes in Colonic Diverticular Disease Randomized Trials: A Systematic Review1 passage
• IPAA in Known Preoperative Crohn's Disease: A Systematic Review1 passage
• Ice Packing Versus Warm Sitz Baths for Post-hemorrhoidectomy Pain Management: A Randomized Controlled Trial1 passage
• Implementation of a Multimodal Enhanced Recovery Protocol in Ambulatory Anorectal Surgery: A Randomized Trial1 passage
• Karydakis Flap With Compressing Tie-over Interrupted Sutures Without Drain versus Standard Karydakis for Treatment of Sacrococcygeal Pilonidal Sinus Disease1 passage
• Long-term Outcome of Radical Excision Versus Phenolization of the Sinus Tract in Primary Sacrococcygeal Pilonidal Sinus Disease: A Randomized Controlled Trial1 passage
• Loop Ileostomy Closure as a 23-Hour Stay Procedure With Preoperative Efferent Limb Enteral Stimulation: A Randomized Controlled Trial1 passage
• Management Strategies for Malignant Left-Sided Colonic Obstruction: A Systematic Review and Network Meta-analysis of Randomized Controlled Trials and Propensity Score Matching Studies1 passage
• Meta-analyses of Current Strategies to Treat Uncomplicated Diverticulitis1 passage
• Operative Strategies for Perforated Diverticulitis: A Systematic Review and Meta-analysis1 passage
• Outcome After Surgical Treatment for Chronic Pilonidal Sinus Disease: A Systematic Review of Common Surgical Techniques1 passage
• Patient-Related Functional Outcomes After Robotic-Assisted Rectal Surgery Compared With a Laparoscopic Approach: A Systematic Review and Meta-analysis1 passage
• Perioperative Transcutaneous Tibial Nerve Stimulation to Reduce Postoperative Ileus After Colorectal Resection: A Pilot Study1 passage
• Phenol Injection Versus Excision With Open Healing in Pilonidal Disease: A Prospective Randomized Trial1 passage
• Preemptive Analgesia Decreases Pain Following Anorectal Surgery: A Prospective, Randomized, Double-Blinded, Placebo-Controlled Trial1 passage
• Preliminary Results of Open Excisional Hemorrhoidectomy Combined With 3% Polidocanol Foam Sclerotherapy in Patients With Grade IV Hemorrhoidal Disease: A Randomized Controlled Open-Label Single-Center Study1 passage
• Prevalence of Active Long-term Problems in Patients With Anorectal Malformations: A Systematic Review1 passage
• Prospective Randomized Trial of Immediate Postoperative Use of Regular Diet Versus Clear Liquid Diet in Major Colorectal Surgery1 passage
• Pudendal Nerve Block in Hemorrhoid Surgery: A Systematic Review and Meta-analysis1 passage
• Recurrence of Acute Right Colon Diverticulitis Following Nonoperative Management: A Systematic Review and Meta-analysis1 passage
• Right-Sided Ileostomy on Stoma Outlet Obstruction in Ulcerative Colitis: A Randomized Controlled Trial1 passage
• Risk of Postoperative Venous Thromboembolism After Benign Colorectal Surgery: Systematic Review and Meta-analysis1 passage
• Social Determinants of Health in Diverticulitis: A Systematic Review1 passage
• Systematic Review and Meta-Analysis of Extraperitoneal Versus Transperitoneal Colostomy for Preventing Parastomal Hernia1 passage
• Systematic Review and Meta-analysis of Nonsteroidal Anti-inflammatory Drugs to Improve GI Recovery After Colorectal Surgery1 passage
• Systematic Review and Meta-analysis on Colorectal Cancer Findings on Colonic Evaluation After CT-Confirmed Acute Diverticulitis1 passage
• Topical Versus Oral Metronidazole After Excisional Hemorrhoidectomy: A Double-Blind Randomized Controlled Trial1 passage
• Treatment of Uncomplicated Acute Diverticulitis Without Antibiotics: A Systematic Review and Meta-analysis1 passage