Decrease in urinary creatinine excretion in early stage chronic kidney disease.. Tynkevich, Elena; Flamant, Martin; Haymann, Jean-Philippe; Metzger, Marie; Thervet, Eric; Boffa, Jean-Jacques; Vrtovsnik, Francois; Houillier, Pascal; Froissart, Marc; Stengel, Benedicte. PloS one. 2014; e111949: p.e111949. doi:10.1371/journal.pone.0111949Article