Li, Teng http://orcid.org/0000-0002-3502-2758
Xu, Qiong
Liao, Hong-tao
Asvestas, Dimitrios
Letsas, Konstantinos P.
Li, Yifu
Article History
Received: 20 February 2019
Accepted: 16 April 2019
First Online: 29 April 2019
Ethics approval and consent to participate
: This retrospective study was approved and supervised by the Ethics Committee of Fuwai Hospital Chinese Academy of Medical Science and Guangdong General Hospital. Written informed consent was obtained from all individual participants included in the study.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.