Community-Acquired Infections 3 Urinary Tract Infections Bacteremia 2 Bacterial Proteins 2 Bacteriological Techniques 2 Carbohydrate Metabolism 2 Citrobacter 2 Citrobacter freundii 2 Classification 2 Cross Infection 2 Distributions 2 Enterobacter infection 2 Enterobacteriaceae Infections 2 Enzymes 2 Feces 2 Hospitals, University 2 Humans 2 Identification 2 Opportunistic Infections 2 Retrospective Studies 2 Sensitivity and Specificity 2 Spain 2 Species Specificity 2 Surgical Wound Infection 2 article 2 bacteremia 2 bacterial protein 2 carbohydrate metabolism 2 classification 2 communicable disease 2