Relative exchangeable copper: A valuable tool for the diagnosis of Wilson disease. - Guillaud, Olivier; Dumortier, Jérôme; Brunet, Anne‐Sophie; Pelosse, Martine; Heissat, Sophie; Rivet, Christine; Lachaux, Alain; Mallet, Isabelle; Bost, Muriel (Liver International, 2018)