Distinct long-term disease activity trajectories differentiate early on treatment with etanercept in both rheumatoid arthritis and spondylarthritis patients: a prospective cohort study. - Flouri I; Goutakoli P; Repa A; Bertsias A; Avgoustidis N; Eskitzis A; Pitsigavdaki S; Kalogiannaki E; Terizaki M; Bertsias G; Sidiropoulos P (Rheumatology international, 2024)