Authors: Yang Gao; Li Ping Li; Jean Hee Kim; Nathan Congdon; Joseph Lau; Sian Griffiths Journal: BMC Public Health Date: 2010-02-03 Impact factor: 3.295
Authors: Liwei Cheng; Li Tan; Lan Zhang; Sheng Wei; Li Liu; Lu Long; Jie Zhang; Yaqiong Wu; Qingjun Zhang; Shaofa Nie Journal: BMC Public Health Date: 2013-08-02 Impact factor: 3.295