Van Chinh Nguyen, Thi Thai Hoa Nguyen, Nguyen Nguyet Tram Luu, Khanh Linh Dao, Thi Thanh Huong Tran and Huy Tuan Kiet Pham 2025. Direct non-medical costs and influencing factors of patients with non-small cell lung cancer treated with targeted therapy: A cross-sectional study in Vietnam. Vietnam Journal of Science, Technology and Engineering. 67, 4 (Dec. 2025). DOI:https://doi.org/10.31276/VJSTE.2024.0122.