Funding for this research was provided by:
“13th Five-Year Plan” National Science and Technology Supporting Plan (2015BAI12B04)
Beijing Science and Technology Supporting Plan (D16110000381605)
Beijing Municipal Administration of Hospitals’ Mission Plan (SML20150501)
Text and Data Mining valid from 2020-05-09
Received: 2 March 2020
Accepted: 23 April 2020
First Online: 9 May 2020
Ethics approval and consent to participate
: This study was performed in accordance with ethical standards, according to the Declaration of Helsinki, and according to national and international guidelines. Informed consents were obtained from all patients, and this study was approved by the institutional review board of Beijing Tiantan Hospital, Capital Medical University.
: Not applicable.
: The authors read and approved the manuscript, and declare that they have no competing interests.