Funding for this research was provided by:
National Natural Science Foundation of China (81700392, 81870291)
Municipal Medical Science Technology Development Foundation of Nanjing (YKK17085)
Received: 13 March 2020
Accepted: 10 June 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: The study has been approved by the Medical Ethics Committee of Nanjing Drum Tower Hospital, Medical School of Nanjing University (2015–059-01). All participants were consent to participate with the verbal consent and it has been approved by the ethics committee. Because our database is not open to public, the individual privacy of the participants could be well protected.
: The relevant data were published with the verbal consent by the participants and has been approved by the ethics committee.
: The authors of this article have no interest of conflicts.