An exploratory study on the role of vitamin D supplementation in improving pain and disease activity in rheumatoid arthritis

Giovanni AdamiRheumatology Unit, University of Verona, Verona, Italy; Correspondence[email protected]

Maurizio RossiniRheumatology Unit, University of Verona, Verona, Italy;

Laura BoglioloRheumatology Unit, Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy;

Francesco Paolo CantatoreRheumatology Unit, University of Foggia, Foggia, Italy;

Massimo VarennaRheumatology Unit, Gaetano Pini Institute, Milan, Italy;

Nazzarena MalavoltaRheumatology Unit, Sant'Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy;

Antonio Del PuenteRheumatology Unit, University Federico II of Naples, Naples, Italy;

Maurizio MuratoreRheumatology Unit, Galateo San Cesario Hospital, San Cesari di Lecce, Italy

Giovanni OrsoliniRheumatology Unit, University of Verona, Verona, Italy;

Davide GattiRheumatology Unit, University of Verona, Verona, Italy;

Ombretta ViapianaRheumatology Unit, University of Verona, Verona, Italy;

Conflict of interests