Published on in Vol 7, No 12 (2019): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13229, first published
.
1 Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
2 Dalian Medical University, Dalian, Liaoning, China
3 Department of Cardiology, Subei People’s Hospital, Yangzhou, Jiangsu, China
*these authors contributed equally