Published on in Vol 7, No 2 (2018): February
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8334, first published
.
1 Herlev Hospital, Department of Neurology N108, University Hospital of Copenhagen, Herlev, Denmark
2 The Institute for the Blind and Partially Sighted (IBOS), Hellerup, Denmark