Biologic therapies for refractory juvenile dermatomyositis: five years of experience of the Childhood Arthritis and Rheumatology Research Alliance in North America oleh CH Spencer, K Rouster-Stevens, H Gewanter, G Syverson, R Modica, K Schmidt, H Emery, C Wallace, S Grevich, K Nanda, YD Zhao, S Shenoi, S Tarvin, S Hong, C Lindsley, JE Weiss, M Passo, K Ede, A Brown, K Ardalan, W Bernal, ML Stoll, B Lang, R Carrasco, C Agaiar, L Feller, H Bukulmez, R Vehe, H Kim, H Schmeling, D Gerstbacher, M Hoeltzel, B Eberhard, R Sundel, S Kim, AM Huber, A Patwardhan, Pediatric Rheumatologist Collaborators