Patients with known small bowel stricture or with symptoms of small bowel obstruction secondary to Crohn's disease should not perform video capsule endoscopy without being previously tested for small bowel patency
Am J Gastroenterol. 2007 Jul;102(7):1542-3; author reply 1543-4.
doi: 10.1111/j.1572-0241.2007.01285.x.