Funding for this research was provided by:
National Natural Science Foundation of China (81771757, 81571587)
National Basic Research Program of China (973 Program) (2016YFC0901500)
Chinese Academy of Medical Sciences Initiative for Innovative Medicine (2017-12M-3-001)
Text and Data Mining valid from 2019-12-01
Received: 20 May 2019
Accepted: 25 November 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Peking Union Medical College Hospital. All enrolled patients consented to attend this cohort study and signed a written informed consent.
: Yes, we obtained consent for publication from all the individuals of whom detailed information was included in the manuscript.
: The authors declare that they have no competing interests.