Wang, Qing
Wang, Suyu
Sun, Zhiyong
Cao, Min
Zhao, Xiaojing
Article History
Received: 23 November 2021
Accepted: 27 June 2022
First Online: 20 July 2022
Declarations
:
: The study was conducted in accordance with the Declaration of Helsinki (as revised in 2013) and the Harmonized Tripartite Guideline for Good Clinical Practice from the International Conference on Harmonization. No approval by the institutional review board was sought, and no individual patient consent was required, because SEER is a public database and the data are de-identified. The authors confirm that they are accountable for all aspects of the work (if applied, including full data access, integrity of the data and the accuracy of the data analysis) in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
: Not applicable.
: All authors have completed the ICMJE uniform disclosure form. The authors have no conflicts of interest to declare.