TNF and inflammatory bowel disease: Excluding the only IBD mixed patient group (study by El-Hussuna et al., 2018 [52]) resulted in a significantly higher postoperative intra-abdominal septic complication rate for anti-TNF-α treated CD patients in comparison to the control group (OR, 1.92; 95% CI, 1.45–2.53; p < 0.00001).