Comparison of Community- and Hospital-Acquired Extended-Spectrum Β-Lactamases Producing Enterobacteriaceae: Antibiotics Susceptibility, Molecular Typing, Host Factors Analysis, and Its Impacts on Gut Microbiota (I) = 社區與醫源性之產生廣效性乙內醯胺酶重要腸內菌比較：抗生素感受性、分子分型、臨床宿主分析及對腸道菌叢的影響 (I)