Published on in Vol 22, No 12 (2020): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/21923, first published
.
1 School of Nursing, Shanghai Jiao Tong University, Shanghai, China
2 School of Medical Sciences, Örebro University, Örebro, Sweden
3 Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, Örebro, Sweden