AL-Obeidy, E. S., Mousawy, K. M., AL-Akayshi, R. J. H., & Kamil, L. A. (2009). Increased Frequency of Complement C4 "Null" Alleles in Autoimmune Hepatitis. Journal of the Faculty of Medicine Baghdad, 51(3), 304-307. https://doi.org/10.32007/jfacmedbagdad.5131131