Published on in Vol 21, No 10 (2019): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13320, first published
.
1 Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
2 Geriatric Education and Research Institute, Singapore, Singapore
3 Division of Medical Information Sciences, University Hospitals of Geneva, Geneva, Switzerland