Ge Zhou, Hongjian Liu, Minfu He, Mengjia Yue, Ping Gong, Fangyuan Wu, Xuanxuan Li, Yingxin Pang, Xiaodi Yang, Juan Ma, Meitian Liu, Jinghua Li, Xiumin Zhang
BMC Public Health. 2018; 18: 294. Published online 2018 Feb 27. doi: 10.1186/s12889-018-5203-5