Is early-onset primary Sjögren's syndrome a worse prognosis form of the disease? - Anquetil C; Hachulla E; Machuron F; Mariette X; Le Guern V; Vittecoq O; Dernis E; Larroche C; Dubost JJ; Perdriger A; Devauchelle-Pensec V; Fauchais AL; et al. (Rheumatology (Oxford, England), 2019)