O.R Omar, Eiman, Naik Haussein, and Amal Ahmed. 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), 441-47. https://doi.org/10.31557/apjcc.2021.6.4.441-447.