Srikantaiah, Hiremath Chandrasekharaiah, and Vinay Bhadrapura Manjappa. 2019. “Diagnostic Value of Pre-Operative Upper GI Endoscopy in Gall Bladder Stone Patients Undergoing Elective Laparoscopic Cholecystectomy”. International Surgery Journal 6 (8):2949-54. https://doi.org/10.18203/2349-2902.isj20193347.