Okonkwo, UC, NM Nwosu, JE Ahaneku, UU Onyeonoro, and OC Okpala. 2012. “The Relationship Between Alphafetoprotein and Aetiological Factors in Patients With Hepatocellular Carcinoma in Nnewi”. Nigerian Journal of Gastroenterology and Hepatology 2 (1):13-19. https://www.ajol.info/index.php/njgh/article/view/77329.