title: The lights went out.
authors.affiliation: shah.ebrahim@lshtm.ac.uk
authors.forename: Shah
authors.initials: S
authors.lastname: Ebrahim
mesh_terms: D002908:Chronic Disease / Q000453:epidemiology; D014943:Global Health; D054624:Health Status Disparities; D006801:Humans; D012307:Risk Factors; D057185:Sedentary Behavior; D012959:Socioeconomic Factors