Anaesthetic techniques for open inguinal hernia repair in adults (protocol stage)

Anti-angiogenic therapy for metastatic colorectal cancer (protocol stage)

Antibiotic regimes and dosages for appendectomy (protocol stage)

Antimicrobial prophylaxis for colorectal surgery (protocol stage)

Appendix stump closure during laparoscopic appendectomy (protocol stage)

Bowel preparation for colonoscopy (protocol stage)

Cesarian section for the prevention of anal incontinence (protocol stage)

Chemotherapy with platinum compounds for metastatic colorectal cancer (protocol stage)

Chewing gum for postoperative ileus (protocol stage)

Closed versus open approach for laparoscopic surgery (protocol stage)

Closure methods for laparotomy incisions (protocol stage)

Colorectal adenoma surveillance for the incidence of and death from colorectal carcinoma. (protocol stage)

Colorectal stents for the management of malignant colonic obstructions (protocol stage)

Concomitant hyperthermia and radiation therapy for treating locally advanced rectal cancer (protocol stage)

Covering ileo- or colostomy in anterior resection for rectal carcinoma (protocol stage)

Duration of chemotherapy for patients with non-metastatic colorectal cancer (protocol stage)

Epidermal growth factor receptor (EGF-R) inhibitors for metastatic colorectal cancer (protocol stage)

Feasibility, safety and efficacy of laparoscopy and laparoscopy-assisted vs. open surgery for acute small bowel obstruction in adults (protocol stage)

Glutamine supplementation in enteral or parenteral nutrition for the incidence of mucositis in colorectal cancer (protocol stage)

Hand Assisted Laparoscopic Surgery versus Conventional Laparoscopy for Colorectal Surgery (protocol stage)

Herbal medicine for relapse and metastasis in patients operated for colorectal cancer (protocol stage)

Herbal medicines for advanced colorectal cancer (protocol stage)

High ligation of arterial supply to tumor for long term survival in patients with operable colorectal cancer (protocol stage)

Incision and drainage of perianal abscess with or without treatment of anal fistula (protocol stage)

Interventions for improving uptake of population-based screening for colorectal cancer using fecal occult blood testing (protocol stage)

Intra-peritoneal prophylactic agents for preventing adhesions and adhesive intestinal obstruction after non-gynaecological abdominal surgery (protocol stage)

Intravenous 5-Fluorouracil based regimes as adjuvant to curative surgery for carcinoma of the colon with local lymphnode spread (Dukes' stage C) (protocol stage)

Iron nutriture for colorectal cancer (protocol stage)

Laparoscopic versus Open surgery for small bowel Crohn's disease (protocol stage)

Leucocyte-depleted versus buffy-coat-depleted red cell suspensions for the incidence of infectious complications after colorectal surgery (protocol stage)

Local surgical treatment in early rectal cancer with or without adjuvant therapy (protocol stage)

Non-operative treatment for haemorrhoidal disease (protocol stage)

Non-surgical management for intussusception in infants and young children (protocol stage)

Omentoplasty for the prevention of anastomotic leakage after colonic or rectal resection (protocol stage)

Open versus laparoscopic (assisted) ileo pouch anal anastomosis for ulcerative colitis or familial adenomatous polyposis. (protocol stage)

Oral versus intravenous fluoropyrimidines for metastatic colorectal cancer. (protocol stage)

Patient tolerance of conventional versus LigaSure hemorrhoidectomy for patients with symptomatic Hemorrhoids. (protocol stage)

Phlebotonics for haemorrhoids (protocol stage)

Postoperative adjuvant chemotherapy for radically operated Dukes´C rectal cancer (protocol stage)

Pre and peri-operative erythropoeitin for reducing allogeneic blood transfusions in colorectal cancer surgery. (protocol stage)

Preoperative chemoradiation versus radiation alone for stage II and III resectable rectal cancer (protocol stage)

Primary fistulotomy or drainage alone for primary acute perianal abscess (protocol stage)

Prolonged thromboprophylaxis for abdominal surgery (protocol stage)

Radiofrequency ablation in the treatment of isolated liver metastases from colorectal cancer (protocol stage)

Radiotherapy versus combined modality therapy for anal carcinoma (protocol stage)

Screening sigmoidoscopy and colonoscopy for reducing colorectal cancer mortality in asymtomatic persons (protocol stage)

Second-line chemotherapy in advanced and metastatic CRC (protocol stage)

Selective internal radiation therapy for liver metastases from colorectal cancer (protocol stage)

Shouldice technique versus other techniques for inguinal hernia repair (protocol stage)

Single layer versus double layer suture for anastomosis of the gastrointestinal tract (protocol stage)

Stomatherapists versus staff nurses for stoma care (protocol stage)

Sugarbaker procedure for pseudomyxoma peritonei (protocol stage)

Surgery for acute complications of diverticular disease: primary or secondary anastomosis after sigmoid resection (protocol stage)

Surgical intervention for chronic anorectal fistula (protocol stage)

Traditional Chinese medicine herbs for preventing bleeding from haemorrhoids (protocol stage)

Ursodeoxycholic acid for the prevention of colorectal adenomas and carcinomas (protocol stage)

Vitamins and minerals for the prevention of colorectal adenomas and carcinomas (protocol stage)

Workload and surgeon´s speciality for outcome after colorectal cancer surgery (protocol stage)