H. Aftab, J. Alam, S. Parveen, M. Hossain, F. Ahmed, and M. Kibria, “Duodenal Gastrointestinal Stromal Tumor: A Rare Cause for Recurrent Anaemia”, J Dhaka Med Coll, vol. 18, no. 1, pp. 85–87, Oct. 2010.