Ahmadi, M.H., Maroufi, F., Kelki, H., Zolghadri, N., Moradi, F., Maali, A. and Azad, M. 2019. The incidence of ABO, Kell and Rh system blood groups in general population of Qazvin, Iran. Archives of Advances in Biosciences. 9, 4 (Jan. 2019), 42–46. DOI:https://doi.org/10.22037/jps.v9i4.23294.