Epidemiological investigation of coccidiosis and associated risk factors in broiler chickens immunized with live anticoccidial vaccines in China oleh Shenquan Liao, Xuhui Lin, Qingfeng Zhou, Zhanxin Wang, Zhuanqiang Yan, Dingai Wang, Guanzhi Su, Juan Li, Minna Lv, Junjing Hu, Haiming Cai, Yongle Song, Xiangjie Chen, Yibin Zhu, Lijun Yin, Jianfei Zhang, Nanshan Qi, Mingfei Sun