Dr. Eloseily et al reply

E. Eloseily, MD, MSc, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Scottish Rite Hospital for Children, Dallas, Texas, USA; Faculty of Medicine, Assiut University, Assiut, Egypt.
J. Baker, Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
G. Schulert, MD, PhD, Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA.
A. Grom, MD, Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA.

FUNDING: This work was supported by the Jellin Family Foundation. EE was supported by an National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases institutional training grant at Cincinnati Children's Hospital (T32-AR069512).
COMPETING INTERESTS: ES serves on the Sobi HLH/MAS education advisory committee. GS has received consulting fees from BI, Sobi, and Novartis; and research support from IpiNovyx. AG has received consulting fees and research support from Novartis and Sobi, and royalties from UpToDate. JB reports no conflicts of interest relevant to this article.