Funding for this research was provided by:
National Natural Science Foundation of China (81771802, 81771893, 81401376, National Natural Science Foundation of China)
Outstanding Youth Foundation of China Medical University (YQ20160005)
Article History
Received: 30 March 2019
Revised: 14 July 2019
Accepted: 30 July 2019
First Online: 19 September 2019
Compliance with ethical standards
:
: Yan Guo is an employee of GE Healthcare, but she attests that she had no control over inclusion of any data or information that might have presented a conflict of interest. There are no actual or potential conflicts of interest to declare in relation to this article. None of the other authors have conflicts of interest or any specific financial interests relevant to the subject of this manuscript.