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Article History

Received: 23 January 2020

Accepted: 15 September 2020

First Online: 9 October 2020

Compliance with ethical standards

: The study was approved by the Ethics Committee of the Northern Jiangsu People’s Hospital (reference no. 2018063).

: The authors declare that they have no conflict of interest.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Informed consent was obtained from all individual participants included in the study. No animals were used in this study.