Sonmez, E., C. Cetin, Y. Ersoy, E. Yuksekkaya, and B. Durmaz. “The Sequential Treatment in Nosocomial Infections With Third Generation Cephalosporins”. Annals of Medical Research, vol. 4, no. 4, May 2021, pp. 0427-9, http://www.annalsmedres.org/index.php/aomr/article/view/2637.