Comparison of radioactive and non-radioactive iothalamate and hippuran to assess kidney function. - Mohamed, Abdulfataah A A; Gansevoort, Ron T; Merbel, Nico C van de; Londen, Marco van; Borst, Martin H de; Zijlma, Rolf; Junier, Lenneke A T; Heerspink, Hiddo J L; Stevens, Jasper (Clinical Kidney Journal, 2025)