1 Université de Liège, Service de Néphrologie, CHU Sart Tilman, Liège, Belgium. Electronic address: jm.krzesinski@chuliege.be.
2 Service de Chirurgie cardio-vasculaire et thoracique, CHU Sart Tilman, Liège, Belgium; Surgical Research Centre, GIGA-Cardiovascular Science Unit, University of Liège, Belgium.