Oussama Abla, MDChair, Rare Histiocytoses Steering Committee- Histiocyte Society, Associate Professor of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
Gritta Janka, MD, PhDChair, HLH Steering Committee, Histiocyte Society, Professor emeritus of Pediatrics, University Medical Center Hamburg Eppendorf, Pediatric Hematology and Oncology, Hamburg, Germany