Bone Erosions Detected by Ultrasound Are Prognostic for Clinical Arthritis Development in Patients With ACPA and Musculoskeletal Pain oleh Michael Ziegelasch, Emma Eloff, Hilde B. Hammer, Jan Cedergren, Klara Martinsson, Åsa Reckner, Thomas Skogh, Mattias Magnusson, Alf Kastbom