1. Guangdong Centre for Disease Control and Prevention, Institute of Chronic Noncommunicable Disease Prevention and Control , 160 Qunxian Road, Panyu district , Guangzhou 511430, China
2. Qingyuan City Centre for Disease Control and Prevention,Institute of Chronic Noncommunicable Disease Prevention and Control , 6 Kangle Road, Qingcheng district , Qingyuan 511518, China
3. Chinese Centre for Disease Control and Prevention, National Chronic Disease Center , 155 Changbai Road, Changping district , Beijing 102206, China
4. Qingxin District Centre for Disease Control and Prevention, Institute of Chronic Noncommunicable Disease Prevention and Control , ′ 15 Fuqian Road, Taihe Town ,′′ Qingyuan 511899,′ China