Li, Xiaofeng, Zhanqiang Zhai, Youcai Zhu, and Haiou Zhou. “Comparison of Gefitinib in the Treatment of Patients With Non-Small Cell Lung Cancer and Clinical Effects of Osimertinib and EGFR Gene Mutation”. Pakistan Journal of Medical Sciences 38, no. 6 (July 5, 2022). Accessed July 12, 2025. https://www.pjms.org.pk/index.php/pjms/article/view/5456.