1. National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China;
2. Center for Global Health, U.S. National Cancer Institute, Rockville, Maryland, USA;
3. Center for Global Health, Division of Cancer Control and Prevention, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. Center for Chronic Disease Prevention and Health Promotion, Division of Cancer Control and Prevention, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA