[1]Department of Infectious Diseases and Clinical Microbiology Zonguldak Bulent Ecevit University Faculty of Medicine Zonguldak 67100 Turkey;
[2]Department of Microbiology Zonguldak Bulent Ecevit University Faculty of Medicine Zonguldak 67100 Turkey;
[3]Department of Biostatistics Zonguldak Bulent Ecevit University Faculty of Medicine Zonguldak 67100 Turkey;
Acinetobacter baumannii; Colistin; Ventilator-associated pneumonia;