[1] Hosp Univ Joan XXIII, Nephrol, Tarragona, Spain
[2] Hosp Univ Joan XXIII, Gastroenterol, Tarragona, Spain
[3] Hosp Univ Joan XXIII, Inst Diagnost Imatge, Tarragona, Spain
[4] Univ Rovira & Virgili, Cellular Pharmacobiol, Dept Basic Hlth Sci, E-43007 Tarragona, Spain
[5] Med Care Nephrol Ctr, Nephrol, Reus, Spain
[6] Hosp Univ Joan XXIII, Informat Syst, Tarragona, Spain