Hindricks J, Ebert T, Bachmann A, Kralisch S, Lössner U, Kratzsch J, Stolzenburg JU, Dietel A, Beige J, Anders M, Bast I, Blüher M, Stumvoll M, Fasshauer M. Serum levels of fibroblast growth factor-21 are increased in chronic and acute renal dysfunction. Clin Endocrinol (Oxf). 2014 Jun;80(6):918–24. doi: 10.1111/cen.12380. PMID: 24612017.