<qa>  What is a common complication of Crohns disease?This is a medical research study for patients with Crohns disease who have one or more draining enterocutaneous fistula fistula from the bowel to the skin. Fistulas are a common complication of Crohns disease. Fistulas rarely close spontaneously but they may get better with treatment of the underlying Crohns disease. This study will investigate the safety and efficacy of maintenance dosing of an anti-TNF anti-tumor necrosis factor antibody a protein, called infliximab, compared to a placebo inactive substance in providing sustained reductions in the number of draining fistulas. 