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Authors
Su, Hang https://orcid.org/0000-0002-6908-851X
Li, Yaning
Men, Quancang
Hao, Juanjuan
Zhang, Fenghua
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Funding
Funding for this research was provided by:
Hebei Provincial Health and Family Planning Commission (Hebei Provincial Health and Family Planning Commission)
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Article History
Received: 4 February 2025
Accepted: 4 April 2025
First Online: 25 April 2025
Declarations
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: All information from the SEER program is available and free for public, so the agreement of the medical ethics committee board was not necessary.
: The work described in this manuscript is original research that has not previously been published and is not considered for publication in whole or in part elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language, including electronically without the written consent of the copyright-holder.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
