Risk factors associated with Pneumocystis jirovecii pneumonia in juvenile myositis in North America.

Sabbagh SE, Neely J, Chow A, DeGuzman M, Lai J, Lvovich S, McGrath T, Pereira M, Pinal-Fernandez I, Roberts J, Rouster-Stevens K, Schmeling H, Sura A, Tarshish G, Tucker L, Rider LG, Kim S, CARRA JDM Workgroup and the Childhood Myositis Heterogeneity Study Group