Farahmand, F., Kiani, M., Khodadad, A., Najafi, M., Fallahi, G., Motamed, F., Ostad Rahimi, P., Vasei, M., Khalili, G., Ghayour- Mobarhan, M., & Sabbagh, M. "The Study of Upper Gastrointestinal Endoscopy in Patients with Inflammatory Bowel Disease and Ulcerative Colitis", Journal of Pediatric Perspectives, 2, 2.1, 2014, 78-78. doi: 10.22038/ijp.2014.2547