Anti-cyclic citrullinated peptide antibody titer predicts time to rheumatoid arthritis onset in patients with undifferentiated arthritis: results from a 2-year prospective study
Nicola Bizzaro*, Elena Bartoloni, Gabriella Morozzi, Stefania Manganelli, Valeria Riccieri, Paola Sabatini, Matteo Filippini, Marilina Tampoia, Antonella Afeltra, Giandomenico Sebastiani, Claudia Alpini, Vittorio Bini, Onelia Bistoni, Alessia Alunno, Roberto Gerli and the Forum Interdisciplinare per la Ricerca nelle Malattie Autoimmuni (FIRMA Group)