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;

Hyporesponsiveness or resistance to the action of parathyroid hormone in chronic kidney disease Jordi Bover; Carolt Arana; Pablo Ureña; Armando Torres; Alejandro Martín-Malo; Leonor Fayos; Verónica Coll; María Jesús Lloret; Jackson Ochoa; Yolanda Almadén; Lluis Guirado; Mariano Rodríguez;

Is it possible to reach the catheter target proposed by the guidelines? Reasons for catheter use in prevalent hemodialysis patients M. Dolores Arenas; Ramiro Cazar; Alfredo Cordón; Angel Méndez; Mariano Acuña; Karina Furaz; David Hernan; Paula Manso; Fabiola Dapena; Florentina Rosiqué; Laura Martinez; Leonor Andúgar; María Lopez Picasso; Jose Luis Santos-Ascarza; Aitana Hernández; Emilio González-Parra; M. Luz Sanchez-Tocino;