Surveillance of polio neutralizing antibody level in local health population in Guangdong Province, 2010
WU Cheng-gang, ZHENG Hui-zhen, HAN Ke, GUO Xue, ZHENG Huan-ying, XU Ning, ZHANG Ji-kai
S China J Prev Med . 2013, (1): 56 -58 .  DOI: 10.13217/j.scjpm.2013.01.056