1. Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
2. Department of Pathology, IiSGM-Hospital General Universitario Gregorio Marañón, Madrid, Spain
3. Renal Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
4. Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain