Erdogu, V., A. C. Kutluk, A. Pekcolaklar, C. Aker, D. Sansar, S. Onay, O. Saydam, and M. Metin. “Prognostic Factors and Classification of Pathological Single and Multiple N1 in Non-Small Cell Lung Cancer Patients”. Annals of Medical Research, vol. 28, no. 11, Nov. 2021, pp. 2032-8, http://annalsmedres.org/index.php/aomr/article/view/3971.