The neutrophil-to-lymphocyte ratio independently predicts all-cause mortality in non-dialysis chronic kidney disease patients with preserved red cell distribution width: A retrospective cohort study - Yunkyeong Hwang; Janghyun Jo; Suyeon Han; Hwajin Park; Yu Ah Hong; Yoon-Kyung Chang; Dae Eun Choi (PLoS ONE, 2026)