Published on in Vol 8, No 4 (2020): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19454, first published
.
1 Neurology Department, Peking University Third Hospital, Beijing, China
2 Neurology Department, Peking University Shougan Hospital, Beijing, China
3 Neurology Department, Peking University Shougang Hospital, Beijing, China