Zhu, Shichao
Kang, Yan
Wang, Wen
Cai, Lin
Sun, Xin
Zong, Zhiyong
Article History
Received: 28 December 2018
Accepted: 10 February 2019
First Online: 18 February 2019
Ethics approval and consent to participate
: All patient data were retrieved from the EMR database. This study was approved (No. WCH2018-409) by the Ethics Committee of West China Hospital, Sichuan University with the waiver of informed consents. Patient data were anonymized prior to analysis.
: Not applicable.
: The authors declare that they have no competing interests.
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