Funding for this research was provided by:
National Key Basic Research Program of China (2015CB553402)
National Key Research and Development Program of China (2018YFC1313600)
Central Public-interest Scientific Institution Basal Research Fund, Chinese Academy of Fishery Sciences (2016ZX310181-6)
Received: 17 September 2019
Accepted: 22 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of Peking Union Medical College Hospital (JS-914). All participants signed the consent form before entering the study.
: Not applicable.
: The authors declare that they have no competing interests.