Follow-Up Comparison of Fluorescence Optical Imaging With Musculoskeletal Ultrasound for Early Detection of Psoriatic Arthritis oleh Juliane Büttner, Anne-Marie Glimm, Anne-Marie Glimm, Georgios Kokolakis, Magdalena Erdmann-Keding, Magdalena Erdmann-Keding, Gerd-Rüdiger Burmester, Paula Hoff, Paula Hoff, Jens Klotsche, Jens Klotsche, Sarah Ohrndorf