Hasan, M. M., M. A. Matin, S. S. Jafran, S. Z. Laila, and M. M. H. Mamun. “Clavien Classification of Complication of Surgery in Emergency Laparotomy: A Study of 40 Cases in Combined Military Hospital”. Journal of Armed Forces Medical College, Bangladesh, vol. 11, no. 2, Jan. 2019, pp. 7-13, doi:10.3329/jafmc.v11i2.39818.