Published on in Vol 6, No 8 (2018): August
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9316, first published
.
1 School of Medicine and Health Management, Huazhong University of Science and Technology, Wuhan, China
2 Department of Medical Records Room, Affiliated Central Hospital of Zhengzhou University, Zhengzhou, China