[National Nutrition and Health Systematic Survey for 0-18 years old children in China:study protocol for 6-18 years old children].

This project brings together the nutrition, epidemiology, child care, mental health experts with the centers for disease control and prevention, and maternal and child health care system in our country. Combining with research institutes and children's hospitals of professional expertise, the project comprehensively collects children's dietary nutrition, growth and development, and health-related data in our country. It would put forward strategies to improve the children's nutrition and health in China and provide the basis for data sharing.