TI - Association Between Smoking Status and PD-L1 Expression in Metastatic Driver Mutation Negative Non-Small Cell Lung Cancer: A Real-World Cohort Study PT - Journal Article DP - 2026 TA - EJMI PG - 473-479 VI - 10 IP - 4 AID - 2612473 [doi] 4100 - https://dx.doi.org/10.14744/ejmi.2612473 SO - EURASIAN JOURNAL OF MEDICIAL INVESTIGATION,2026 10(4): 473