Progressive destruction of jaws caused by the delayed treatment of Langerhans cell histiocytosis in a 2-year-old boy: A case report.

"Declarations Conflict of interestThe authors declare that they have no conflict of interest. Ethical approvalAll procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5). The study was approved by the West China Hospital of Stomatology Institutional Review Board, Sichuan University. Informed consentInformed consent was obtained from all patients for being included in the study. And identifying information of the patient is not included in the article. Conflict of interest The authors declare that they have no conflict of interest."

"Funding This study was funded by Research and Develop Program, West China Hospital of Stomatology Sichuan University (RD-02–202110) to MM Meng and NSFC grants (82170947) to J Zou."