Doraiswamy, Srinivasan, Dharmendra Kumar, P. N. Sreeramulu, and Suresh . 2019. “Diagnosis of Helicobacter Pylori in Cholelithiasis and Cholecystitis: By Histology and Serological Association”. International Surgery Journal 6 (11):3986-90. https://doi.org/10.18203/2349-2902.isj20195110.