CJCP     2003 5 (2):  130-132    ISSN: 1008-8830  CN: 43-1301/R Risk Factors for Infection by Extended Spectrum β-Lactamase Producing Bacteria in Children ZHANG Bing, ZHONG Li-Li, CAI Rui-Yun, LI Yun, ZENG Sai-Zhen, HUANG Han, ZHOU Run-Ying, WANG Tao Department of Pediatrics, People’s Hospital of Hunan Province, Changsha 410008, China Received: null  Revised: null  Online: null Supporting info