Article 8 human 8 antibiotic resistance 5 antiinfective agent 5 beta lactam 5 beta lactam antibiotic 5 controlled study 5 female 5 macrolide 5 major clinical study 5 nonhuman 5 retrospective study 5 Humans 4 antibiotic sensitivity 4 erythromycin 4 methicillin resistant Staphylococcus aureus 4 penicillin derivative 4 tetracycline 4 vancomycin 4 Anti-Bacterial Agents 3 Staphylococcus aureus 3 adult 3 aminoglycoside antibiotic agent 3 ampicillin 3 bacterial gene 3 bacterial genome 3 bacterial virulence 3 bacterium isolate 3 chloramphenicol 3 cotrimoxazole 3