Recommendations of the Spanish Society of Nephrology for the management of mineral and bone metabolism disorders in patients with chronic kidney disease: 2021 (SEN-MM) José-Vicente Torregrosa; Jordi Bover; Mariano Rodríguez Portillo; Emilio González Parra; María Dolores Arenas; Francisco Caravaca; María-Luisa González Casaus; Alejandro Martín-Malo; Juan Francisco Navarro-González; Víctor Lorenzo; Pablo Molina; Minerva Rodríguez; Jorge Cannata Andia;

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Comparison of MDRD equations and the old equations CKD-EPI against new equations CKD-EPI in patients with kidney transplantation when used 51Cr-EDTA to measure glomerular filtration Francisco José Borrego Utiel; Angel Miguel Ramírez Navarro; Rafael Esteban de la Rosa; Juan Antonio Bravo Soto;