Balaii, H., Asadzadeh Aghdaei, H., Farnood, A., Habibi, M., Mafi, A. A., Firouzi, F., Sharifian, A., Shahrokh, S., Lahmi, F., Zojaji, H., Naderi, N. and Zali, M. R. (2015) “Time trend analysis; demographic features of Inflammatory Bowel Disease in Tehran”, Gastroenterology and Hepatology from Bed to Bench, 8(4), pp. 253–261. doi: 10.22037/ghfbb.v8i4.692.