Facility-level comorbidity burden and cardiovascular outcome in patients undergoing hemodialysis - Hyo Jeong Kim; Seok-Jae Heo; Jung Tak Park; Ga Young Heo; Kyung Won Kim; Yong Uk Kwon; Soo Hyun Kim; Gui Ok Kim; Seung Hyeok Han; Tae-Hyun Yoo; Shin-Wook Kang; Hyung Woo Kim (Kidney Research and Clinical Practice, 2026)