Chinese Journal of Evidence -Based Pediatric ›› 2012, Vol. 7 ›› Issue (2): 124-127.DOI:
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CHONG Mei1,HAN Ling1,DU Jun-bao2,JIN Mei1,WANG Xiao-fang1,ZHENG Ke1,LIANG Yong-mei1,XIAO Yan-yan1,JIAO Meng1