Living on High Altitudes Associated with Reduced Requirements of Exogenous Erythropoietin in Patients on Chronic Hemodialysis oleh André Benítez, David Garrido, Andrea Banegas, María Belén Mena, Washington Osorio, Jorge Rico-Fontalvo, Maria Raad-Sarabia, Rodrigo Daza-Arnedo, Maria Cardona-Blanco, Tomas Rodriguez-Yanez, Liseth Sierra-Torres