Nandyala, V. N. R., P. pallam, S. babu Chintakindi, L. Pallagani, and G. Kundarapu. “Gall Bladder Perforation - Is It Still a Diagnostic Dilemma: A Retrospective Study”. International Surgery Journal, vol. 3, no. 2, Dec. 2016, pp. 609-13, doi:10.18203/2349-2902.isj20161131.