MOHAMMED SALIH, A., H. SADDEQ HASAN, S. SARDAR ZUHDIN, and A. M. ABDULRAHMAN. “ASSOCIATION OF COMPLEMENTFACTOR H GENE (CFH) SINGLE NUCLEOTIDE POLYMORPHISM WITH RECURRENT APHTHUS STOMATITIS”. Duhok Medical Journal, Vol. 12, no. 1, June 2018, pp. 84-95, https://dmj.uod.ac/index.php/dmj/article/view/40.