Published on in Vol 6, No 11 (2018): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8127, first published
.
1 Guangdong Engineering and Technology Research Center for Rehabilitation Medicine and Translation, Department of Rehabilitation Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
2 Department of Electronic and Electrical Engineering, University College London, London, United Kingdom