Funding for this research was provided by:
National Natural Science Foundation of China (71774116, 71603182)
Shanghai Excellent Young Talents Project in Health System (2018YQ52)
National Key R&D Program of China (2018YFC2000700)
Shanghai Pujiang Program (2019PJC072)
Text and Data Mining valid from 2020-04-29
Received: 10 January 2020
Accepted: 20 April 2020
First Online: 29 April 2020
Ethics approval and consent to participate
: The research presented minimal risk of harm to its subjects, and the data were outpatient data collected anonymously from the Shanghai information Center. We acquired the administrative permissions to access the data. Procedures of this research were approved by the ethical committee at Shanghai Jiaotong University.
: Not applicable.
: The authors have declared that no conflict of interest exists.