EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI) is sensitive to show efficacy of rituximab treatment in a randomised controlled trial. Issue 2 (12th August 2013) - Moerman, R V; Arends, S; Meiners, P M; Brouwer, E; Spijkervet, F K L; Kroese, F G M; Vissink, A; Bootsma, H