NSAID Use, Gastrointestinal Complications, and Burden of Disease in Osteoarthritis: Nordic Registry Study with Emphasis on Patients Below 60 Years. - Kvien, Tore K.; Hansen, Johan L.; Böttger, Robert; Freitas, Rita; Jastorff, Jan; Mascia, Elena; Gross, Manfred (Rheumatology & Therapy, 2026)