Trends of obesity and overweight among children and adolescents in China.

"Declarations Ethical approvalNot applicable. Conflict of interestNo financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article. Author Jun-Fen Fu is a member of the Editorial Board for World Journal of Pediatrics. The paper was handled by the other Editor and has undergone rigorous peer review process. Author Jun-Fen Fu was not involved in the journal's review of, or decisions related to, this manuscript. The authors have no conflict of interest to declare. Conflict of interest No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article. Author Jun-Fen Fu is a member of the Editorial Board for World Journal of Pediatrics. The paper was handled by the other Editor and has undergone rigorous peer review process. Author Jun-Fen Fu was not involved in the journal's review of, or decisions related to, this manuscript. The authors have no conflict of interest to declare."

"Funding This work was supported by the National Key Research and Development Program of China (Nos. 2021YFC2701901 and 2016YFC1305301), National Natural Science Foundation of China (Nos. 81570759 and 81270938), and Zhejiang Provincial Key Disciplines of Medicine (Innovation Discipline, No. 11-CX24)."