The ratio of lymph node eluate/serum cytokeratin 21-1 is a potential predictor of lymph node metastasis in lung adenocarcinoma - Xu, Shihao; Hu, Tianqi; Zhou, Chenkang; Wang, Min; Jiang, Jiachun; Wang, Yumin; Wang, Caihong (Journal of Thoracic Disease; Vol 16, No 9 (September 30, 2024): Journal of Thoracic Disease, 2024)