multidrug resistance Article 13 human 12 nonhuman 11 antibiotic resistance 8 Drug Resistance, Multiple, Bacterial 7 Escherichia coli 7 Humans 6 antibiotic sensitivity 6 controlled study 6 Multidrug resistance 5 antiinfective agent 5 bacterial gene 5 bacterium identification 5 drug effect 5 genetics 5 male 5 microbial sensitivity test 5 minimum inhibitory concentration 5 unclassified drug 5 Anti-Bacterial Agents 4 Microbial Sensitivity Tests 4 Pseudomonas aeruginosa 4 Review 4 ciprofloxacin 4 imipenem 4 methicillin resistant Staphylococcus aureus 4 microbiology 4 tetracycline 4 Klebsiella pneumoniae 3