Saade Abdalkareem Jasim, Zainab Amer Hatem, Zainab Abd Mohammed. “Virulence Factors and Clinical Features of Streptococcus Pyogenes : Overview”. Annals of the Romanian Society for Cell Biology (January 31, 2021): 603–614. Accessed April 26, 2024. http://annalsofrscb.ro/index.php/journal/article/view/151.