1. Delaney MP, Lamb EJ. Kidney disease. In: Rifai N, editor. Tietz textbook of laboratory medicine. 7th ed. St. Louis (MO): Elsevier, 2023:607-75.
2. Lamb EJ, Jones GR. Kidney function tests. In: Rifai N, editor. Tietz textbook of laboratory medicine. 7th ed. St. Louis (MO): Elsevier, 2023:352.
3. National Kidney Foundation. K/DOQI clinical practice guidelines for chronic kidney disease: evaluation, classification, and stratification. Am J Kidney Dis 2002;39(2 Suppl 1):S1-266.
4. Chapter 1: Definition and classification of CKD
5. Ministry of Health and Welfare. Standards for conducting health examinations (Notification of the Ministry of Health and Welfare: 2023-292). https://www.mohw.go.kr/board.es?mid=a10409020000&bid=0026&list_no=1479608&act=view (Accessed February 20, 2024).