Desai, Rajendra, Earnest Daniel Prasad, Satyanarayana G., Lakshmi V., and Nayana Joshi. “A Study of Etiology and Role of Bacteria in the Pigment Gall Stone Diseases at a Tertiary Care Hospital”. International Surgery Journal 5, no. 12 (November 28, 2018): 4022–4025. Accessed November 7, 2025. https://www.ijsurgery.com/index.php/isj/article/view/3573.