Measuring universal health coverage based on an index of effective coverage of health services in 204 countries and territories, 1990-2019: a systematic analysis for the Global Burden of Disease Study 2019 - Lozano, R; Fullman, N; Mumford, JE; Knight, M; Barthelemy, CM; Abbafati, C; Abbastabar, H; Abd-Allah, F; Abdollahi, M; Abedi, A; Abolhassani, H; Abosetugn, AE; et al. (2020)