From the Néphrologie Dialyse Saint Guilhem, Sete, France (A.A.); RD - Néphrologie, Montpellier, France (A.A.); Mariano Rodriguez, IMIBIC, Nephrology Service Hospital Universitario Reina Sofia de Cordoba, Spain (M.R.); Red de Investigacion Renal (REDINREN), Madrid, Spain (M.R., A.O.); and IIS-Fundacion Jimenez Diaz UAM and FRIAT, Madrid, Spain (A.O.).