O.R Omar, E., Emalaika Husain, N., & Ismail, A. (2021). The Role of Immunohistochemistry in the Workup of Malignant Neoplasms of Unknown Primary Origin at Khartoum Oncology Hospital. Asian Pacific Journal of Cancer Care, 6(4), 441-447. https://doi.org/10.31557/apjcc.2021.6.4.441-447