Interferon‐gamma and C‐X‐C motif chemokine ligand 9, which is better for haemophagocytic lymphohistiocytosis diagnosis and monitoring? - Luo, Zebin; Chen, Yuanyuan; Gu, Miner; Zhao, Fenying; Liang, Juan; Tang, Yongmin; Xu, Xiaojun (British Journal of Haematology, 2025)