Analysis of adverse events following immunization in Tianjin (2011-2013) evaluated by active <span>surveillance and passive surveillance#br# </span>

LI Yongcheng1， ZHANG Ying， GAO Zhigang， LIU Hongying， HU Qiang， HAN Yonggang, CHANG Limin

Tianjin Medical Journal . 2015, (11): 1330 -1333 . DOI: 10.11958/j.issn.0253-9896.2015.11.029