Letter

Ocular Surface Disease Index (OSDI): a potential useful instrument for the assessment of vision-targeted health-related quality of life (VT-HRQ) in primary Sjögren's syndrome (pSS) clinical trials?

G. Gabbriellini, C. Baldini, V. Varanini, F. Ferro, P. Pepe, N. Luciano, F. Fanucci, M. Mosca, M. Nardi, S. Bombardieri