Clinicopathological Evaluation of Gallbladder Lesions in Cholecystectomy Specimens with Special Emphasis on Incidentally Detected Cases of Gallbladder Carcinoma: An Immunohistochemical Study of Cytokeratin 7 and Cytokeratin 20 - Bora, Kakoli; Saikia, Chandan (Asian Pacific Journal of Cancer Care, 2023)