Funding for this research was provided by:
the National Key R&D Program of China (2017YFC0113000)
Capital project of scientific and technological development of traditional Chinese medicine in Beijing (NQ2016-07)
Key clinical projects in Peking University Shougang Hospital (2017-hospital-clinical-01, SGYYZ201610, SGYYQ201605)
Medical innovation project of Fujian Province in 2014 (2014-CXB-24)
Capital’s Funds for Health Improvement and Research (2011-4026-02)
Received: 3 June 2020
Accepted: 24 July 2020
First Online: 1 August 2020
Ethics approval and consent to participate
: The BEST study protocol conforms to the ethical guidelines of the 1975 Declaration of Helsinki and was approved by the Ethics committee of Peking University Shougang Hospital (the updated Ethics number IRBK-2017-017-01). Before enrollment, all study participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.