We thank the participants of the study.
No funding or sponsorship was received for this study or publication of this article. The article processing charges were funded by the authors.
All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.
Xiao-Wen Wang, Xing-Guo Niu, Jin-Xiu Li, Si-Sen Zhang, and Xian-Fa Jiao declare that they have no conflict of interest.
Compliance with Ethics Guidelines
This study was conducted in accordance with the 1964 declaration of Helsinki and its later amendments and was approved by the Ethics Committee of People’s Hospital of Zhengzhou. Written informed consent was obtained from all participants.
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.