Ultrasonography in the diagnosis of suspected primary Sjögren’s syndrome and concordance with salivary gland biopsy: a Spanish single-center study

1. Barrio-Nogal, L.
2. Novella-Navarro, M.
3. Heras, C.B.
4. Sala-Icardo, L.
5. Calvo-Aranda, E.
6. Gómez, A.P.