Epidemiological characteristics of typhoid and paratyphoid, Shantou, 2009-2013
徐八一,徐志霞,许璐,张旭彬,姚丽君,廖朝晖
S China J Prev Med . 2014, (6): 550 -552 .  DOI: 10.13217/j.scjpm.2014.0550