Case report: Aggressive natural killer cell leukemia and refractory hemophagocytic lymphohistiocytosis in an adolescent - Spaner, Caroline; Durkee-Shock, Jessica; Weng, Andrew; Stubbins, Ryan; Gerrie, Alina S.; Pittaluga, Stefania; Cohen, Jeffrey I.; Chen, Luke Y. C. (Frontiers in Hematology, 2024)