Funding for this research was provided by:
National Natural Science Fund of China (81570375)
The Scientific and Technological Project of Tianjin Binhai New Area Health Committee (2017BWKY036)
The Incubation Fund Project of Tianjin Medical University General Hospital (ZYYFY2016021)
Article History
Received: 4 May 2019
Accepted: 23 September 2019
First Online: 15 October 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.