Common haematological malignancies in Northeastern Nigeria: a multi-centre study of their pattern, distribution and treatment challenges - Dachi, Rufai Abdu; Mustapha, Falmata Grema; James, Jesini; Pindiga, Kasim Muhammad; Ezenkwa, Uchenna Simon; Yusuf, Maimuna Orahachi; Yuguda, Saleh; Suleiman, Dauda Eneyamire (Frontiers in Oncology, 2025)