X.-K. Zhang, P. Yang, Z.-L. Zhang, W.-M. Hu, and Y. Cao, “Preoperative Low Lymphocyte-to-Monocyte Ratio Predicts Poor Clinical Outcomes for Patients with Urothelial Carcinoma of the Upper Urinary Tract”, Urol J, vol. 15, no. 6, pp. 348–354, Nov. 2018.