Saddam Zabn, mawj, Khalid Al-Kheroo, Z. and Abd Aljabbar al Tobje, M. (2026) “Measuring IgM, IgG, and C4 levels in children with recurrent bacterial infections”, Tikrit Journal of Pure Science, 31(2), pp. 1–10. doi: 10.25130/tjps.v31i2.1908.