1. Clinical Chemistry and Hematology Laboratory; University Hospital of Parma; Parma Italy
2. Synlab Italia S.r.l.; Castenedolo Italy
3. Department of Laboratory Medicine ASL 3; Bassano del Grappa Italy
4. Clinical Chemistry Laboratory; Avezzano Civic Hospital; Avezzano Italy
5. Laboratory Department; Azienda Ospedaliera Careggi; Florence Italy
6. Department of Clinical Pathology; USL Toscana Nordovest; Pisa Italy
7. Department of Clinical Chemistry and Microbiology; ASL Novara; Borgomanero Italy
8. Department of Clinical Chemistry; Versilia Hospital; Lido di Camaiore Italy
9. Department of Laboratory Medicine; CNR Fondazione Toscana Gabriele Monasterio; Pisa Italy
10. Clinical Chemistry Laboratory; Papa Giovanni XXIII Hospital; Bergamo Italy
11. Clinical Chemistry Laboratory; Policlinico San Matteo-IRCCS; University of Pavia; Pavia Italy
12. Laboratory of Clinical Biochemistry; University of Verona and Azienda Ospedaliera Universitaria Integrata Verona; Verona Italy
13. Clinical Chemistry Laboratory; Abele Ajello Hospital; Mazara del Vallo Italy