Definition and evolution of the concept of sarcopenia Maria Luz Sanchez-Tocino; Secundino Cigarrán; Pablo Ureña; Maria Luisa González-Casaus; Sebastian Mas-Fontao; Carolina Gracia-Iguacel; Alberto Ortíz; Emilio Gonzalez-Parra;

Hepatitis B virus vaccine and chronic kidney disease. The advances Fabrizio Fabrizi; Roberta Cerutti; Vivek Dixit; Ezequiel Ridruejo;

External validation of a predictive model for one-year mortality in incident hemodialysis patients: A Portuguese cohort Telma Pais; Beatriz Teixeira; Miguel Carrilho; José Agapito Fonseca; Cristina Outerelo; Sofia Jorge; Cristina Resina; José António Lopes; Joana Gameiro;