title: Trends in US asthma mortality: good news and bad news.
authors.forename: D M
authors.initials: DM
authors.lastname: Lang
mesh_terms: D001249:Asthma / Q000453:epidemiology / Q000401:mortality*; D006801:Humans; D009026:Mortality / Q000639:trends*; D015995:Prevalence; D012720:Severity of Illness Index; D014481:United States / Q000453:epidemiology