. Author manuscript; available in PMC: 2020 Nov 6.
Published in final edited form as: Lancet Digit Health. 2020 Oct 19;2(11):e594–e606. doi: 10.1016/s2589-7500(20)30225-9
This is an Open Access article under the CC BY-NC-ND 4.0 license. http://creativecommons.org/licenses/by-nc-nd/4.0/