Published on in Vol 8, No 5 (2020): May
                                    Preprints (earlier versions) of this paper are
                                    available at
                                    https://preprints.jmir.org/preprint/17334, first published
                                    .
                                

1 School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
2 College of Engineering, Design and Physical Sciences, Brunel University London, London, United Kingdom
