Acknowledgments
We thank the medical staffs of Hematology Center, Beijing Children’s Hospital, Capital Medical University, and all participated patients and their families.
Authors’ contributions
DYL and GHX participated in study design and data interpretation. The manuscript was prepared by GHX, and DYL was a major contributor to review and edit the manuscript. ZCJ is responsible for tissue examination and diagnosis. JL and YJ participated in the statistical analysis and table production. ZNN is responsible for imaging diagnosis. HS, ZM, and YXL were responsible for the collection of clinical specimens and pathological data. ZYH and WTY were responsible for study design and supervision. All authors read and approved the final manuscript. All authors read and approved the final manuscript.
Ethical approval and consent to participate
This study was conducted in accordance with the Declaration of Helsinki and approved by the Institutional Review Board (IRB) of Beijing Children’s Hospital, Capital Medical University. All parents signed informed consent forms.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Informed consent
was obtained from all subjects or their legal guardian(s)/parents (for children’s below 16 years old). This study is accordance with the relevant guidelines and regulation.
Consent for publication
Not applicable.
Data availability statement
Raw data are available from the corresponding author upon reasonable request.