Othman, S. I., and F. A. Ali. “Molecular Comparative Study of Virulence Factors Produced by Gram-Negative Bacteria Isolated from Several Cancer Cases and NonCancer Patients in Erbil Governorate, Iraq”. Polytechnic Journal, vol. 12, no. 2, Apr. 2023, pp. 92-99, doi:10.25156/ptj.v12n2y2022.pp92-99.