Funding for this research was provided by:
Shanghai Pujiang Program (19PJ1407500)
Medical and Engineering Cross Research Fund from Shanghai Jiao Tong University (YG2019QNA31)
Text and Data Mining valid from 2019-11-06
Received: 9 February 2019
Accepted: 21 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This study received an exempt determination from the Massachusetts General Hospital Investigational Review Board, as the data are Health Insurance Portability and Accountability Act (HIPAA)-compliant.
: Not applicable
: The authors declare that they have no competing interests.