1. Association between sodium-to-potassium ratio in spot urine and hospitalization due to heart failure in high-risk Japanese patients
   Tsuneaki Sadanaga et al, 2024, IJC Heart & Vasculature CrossRef
2. Spot urine sodium‐to‐creatinine ratio surpasses sodium in identifying poor diuretic response in acute heart failure
   Gracjan Iwanek et al, 2024, ESC Heart Failure CrossRef