Clinical experiences in the management of critically ill patients with COVID-19 in a designated children's hospital in China.

"Declarations Conflict of interestAuthor Dr. Guo-Ying Huang, Yong-Hao Gui and Dr. Hong Xu are members of the Editorial Board for serves as Associate Editor for World Journal of Pediatrics. The paper was handled by the other Editor and has undergone rigrous peer review process. Authors Guo-Ying Huang,Yong-Hhao Gui and Hong Xu were not involved in the journal’s review of, or decisions related to, this manuscript. Ethical approvalNot applicable. Conflict of interest Author Dr. Guo-Ying Huang, Yong-Hao Gui and Dr. Hong Xu are members of the Editorial Board for serves as Associate Editor for World Journal of Pediatrics. The paper was handled by the other Editor and has undergone rigrous peer review process. Authors Guo-Ying Huang,Yong-Hhao Gui and Hong Xu were not involved in the journal’s review of, or decisions related to, this manuscript."

"Funding The study is provided by The National Key Research and Development Program of China (No. 2021ZD0113501); The Shanghai Municipal Three-year Action Plan for Strengthening the Construction of The Public Health System (2020-2022-GWV3.2); The Science and Technology Commission of Shanghai Municipality (No. 21511104502)."