Lipcsey M., Furebring M., Rubertsson S., & Larsson A. (2010). Significant differences when using creatinine, modification of diet in renal disease, or cystatin C for estimating glomerular filtration rate in ICU patients. Upsala Journal of Medical Sciences, 116(1), 39–46. https://doi.org/10.3109/03009734.2010.526724