1. From INSERM UMR S 525 and Université Pierre et Marie Curie-Paris 6 (P.E.M., V.N., F.C., L.T.), Paris, France; INSERM UMR626 (P.E.M.), Marseille, France; Innere Abteilung (C.B.), Bundeswehrzentralkrankenhaus Koblenz, Germany; the Department of Medicine II (R.S., H.J.R., S.B.), Johannes Gutenberg-University Mainz, Germany; and Clinical Chemistry and Laboratory Medicine (D.P., K.J.L.), Johannes Gutenberg-University Mainz, Germany.