Proteomic and histopathological characterisation of sicca subjects and primary Sjögren's syndrome patients reveals promising tear, saliva and extracellular vesicle disease biomarkers. - Aqrawi LA; Galtung HK; Guerreiro EM; Øvstebø R; Thiede B; Utheim TP; Chen X; Utheim ØA; Palm Ø; Skarstein K; Jensen JL (Arthritis research & therapy, 2019)