Joarder, A. I., M. S. Faruque, M. N. E. Elahi, I. Jahan, O. Siddiqui, M. M. Siddiqui, S. Mubin, S. Imdad, and R. Hasan. “Risk Factors Associated With 55 1 In Elective Gastrointestinal Surgery: A Prospective Study In A Specialized Surgical Centre”. Journal of Surgical Sciences, vol. 16, no. 2, Oct. 2019, pp. 71-75, doi:10.3329/jss.v16i2.43604.