title: Comparative efficiency of national health systems. Methodological problems were understated.
authors.forename: Malcolm
authors.initials: M
authors.lastname: Segall
mesh_terms: D003695:Delivery of Health Care / Q000592:standards*; D006302:Health Services Research / Q000379:methods*; D006801:Humans; D008017:Life Expectancy; D019984:Quality Indicators, Health Care