Okonkwo, U.; Nwosu, N.; Ahaneku, J.; Onyeonoro, U.; Okpala, O. The Relationship Between Alphafetoprotein and Aetiological Factors in Patients With Hepatocellular Carcinoma in Nnewi. Nig. J. Gastroenterol. Hepatol. 2012, 2, 13-19.