Zhao, Tian-Jun
Yang, Qian-Kun
Bi, Li-Dan
Li, Jie
Tan, Chun-Yu
Miao, Zhi-Lin
Article History
Received: 6 June 2020
Revised: 15 September 2020
Accepted: 17 September 2020
First Online: 21 October 2020
Compliance with ethical guidelines
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: T.‑J. Zhao, Q.‑K. Yang, L.‑D. Bi, J. Li, C.‑Y. Tan and Z.‑L. Miao declare that they have no competing interests.
: The present study was performed in accordance with the World Medical Association Declaration of Helsinki and was approved by the Ethics Board of The People’s Hospital of China Medical University. This study was a retrospective study and all the data used in the final analysis was anonymous. Therefore, the informed consent from the enrolled patients was waived. The institutional review board of our hospital gave the ethical approval for this study.