Received: 28 January 2021
Accepted: 22 April 2021
First Online: 9 June 2021
: This retrospective investigation was approved by the Research Ethics Committee of Guangdong General Hospital, Guangdong Academy of Medical Sciences. [No. GDREC2017172h]. Each participant provides written informed consent to collect all data before the study and was anonymized before analyses.
: Not applicable.
: The authors declare that they have no competing interests.