Khan, S. M., Alam, M. M., Akhter, S. and Alam, D. (2014) “Relationship of Various Prognostic Factors with Outcome of Treatment of Chronic Duodenal Ulcer Perforation Patients”, Chattagram Maa-O-Shishu Hospital Medical College Journal, 13(2), pp. 32–35. doi: 10.3329/cmoshmcj.v13i2.21060.