Nasopharyngeal carriage rate, antimicrobial resistance and serotype distribution of Streptococcus pneumoniae among children with upper respiratory infection
YU Sang-Jie, GAO Wei, SHI Wei, YUAN Lin, SHEN A-Dong, YAO Kai-Hu, YANG Yong-Hong
CJCP . 2014, (10): 988 -992 .  DOI: 10.7499/j.issn.1008-8830.2014.10.006