Affiliation: | 1. Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy;2. Department of Clinical Chemistry, Ullevaal University Hospital and Institute of Medical Biochemistry, University of Oslo, Oslo, Norway;3. Department of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden;4. Ospedale Pediatrico Bambino Gesù, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy |