Hallberg P., Melhus H., Hansson L.-O. and Larsson A. 2009. Cystatin C vs creatinine as markers of renal function in patients on digoxin treatment. Upsala Journal of Medical Sciences. 109, 3 (Jul. 2009), 247–254. DOI:https://doi.org/10.3109/2000-1967-087.