1. 1) Kidney Disease : Improving Global Outcomes (KDIGO) CKD-MBD Work Group : KDIGO clinical practice guideline for the diagnosis, evaluation, prevention and treatment of Chronic Kidney Disease-Mineral and Bone Disorder (CKD-MBD). Kidney Int 76 (Suppl 113) : S1-S130, 2009
2. 2) Guideline working group, Japanese Society for Dialysis Therapy : Clinical practice guideline for the management of secondary hyperparathyroidism in chronic dialysis patients. Ther Aphr Dial 12 : 511-522, 2008
3. 3) Uhlig K, Maclead A, Craig J, Lau J, Levey AS, Levin A, Moist L, Steinberg E, Walker R, Wannar C, Lameire N, Eknoyan G : Grading evidence and recommendations for clinical practice guidelines in nephrology. A position statement from Kidney Improving Global outcomes (KDIGO). Kidney Int 70 : 2058-2065, 2006
4. 4) Atkins D, Best D, Briss PA, Eccles M, Falck-Ytter Y, Flottorp S, Guyatt GH, Harbour RT, Haugh MC, Henry D, Hill S, Jaeschke R, Leng G, Liberati A, Magrini N, Mason J, Middleton P, Mrukowicz J, O'Connell D, Oxman AD, Phillips B, Schünemann HJ, Edejer TT, Varonen H, Vist GE, Williams JW Jr, Zaza S ; GRADE Working Group : Grading quality of evidence and strength of recommendations. BMJ 19 : 328 : 1490, 2004