Asthma mortality in Danish children and young adults, 1973-1994: epidemiology and validity of death certificates
IM Jorgensen, S Bulow, VB Jensen, TL Dahm, P Prahl, K Juel
European Respiratory Journal 2000 15: 844-848; DOI: 10.1034/j.1399-3003.2000.15e06.x