PLoS One
http://www.plosone.org/
[Accessed 3 Nov 2018 ]

Factors influencing the routine immunization status of children aged 2-3 years in China
Lei Cao, Jing-Shan Zheng, Ling-Sheng Cao, Jian Cui, Meng-Juan Duan, Qi-You Xiao
Research Article | published 31 Oct 2018 PLOS ONE
https://doi.org/10.1371/journal.pone.0206566