Desai, R., Prasad, E.D., G., S., V., L. and Joshi, N. 2018. A study of etiology and role of bacteria in the pigment gall stone diseases at a tertiary care hospital. International Surgery Journal. 5, 12 (Nov. 2018), 4022–4025. DOI:https://doi.org/10.18203/2349-2902.isj20185037.