Kilo, J., J. E. Margreiter, E. Ruttmann, J. O. Bonatti, and G. Laufer. “Slightly Elevated Serum Creatinine Predicts Renal Failure Requiring Hemofiltration After Cardiac Surgery”. The Heart Surgery Forum, vol. 8, no. 1, Feb. 2005, pp. E34-E38, doi:10.1532/HSF98.20041117.