IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-3-33977 Original Research Paper Causes of non-traumatic acute abdomen in General Surgery Ward of a tertiary medical college of West Bengal : A one year retrospective study. Niladri Sarkar Dr. Dr. Nibaran Mandal Dr. March 2021 10 3 01 02