Introduction of pertussis surveillance system and evaluation of its operational effect in Tianjin
HUANG Hai-Tao, GAO Zhi-Gang, DING Ya-Xing, SUN Jing, LI Yong-Cheng, ZHANG Ying
CJCP . 2019, (3): 218 -222 .  DOI: 10.7499/j.issn.1008-8830.2019.03.006