Saara Ahmad, Bisma Badr, Asra Khan, Rehana Rehman, Kulsoom Ghias, Jibran Sualeh Muhammad and Muhammad Rizwan Khan 2021. The Role of K-Ras and P53 in Biliary Tract Carcinoma. Journal of the Pakistan Medical Association. 71, 10 (Jul. 2021), 2378–2384. DOI:https://doi.org/10.47391/JPMA.11-1322.