Oral Cavity Colonization with Multidrug-Resistant Gram-Negative Bacteria after Preoperative Prophylactic Use of Antibiotics as a Risk Factor for Ventilator-Associated Pneumonia. - Bratić V; Lukić A; Bedenić B; Bjelanović I; Bevanda M; Mihaljević S; Verzak Ž (Psychiatria Danubina, 2021)