1. Changing patterns of asthma mortality: identifying target populations at high risk;Weiss;JAMA,1990
2. Asthma mortality and hospitalization among children and young adults—United States, 1980-1983;MMWR,1996
3. Current estimates from the National Health Interview Survey, 1994: National Center for Health Statistics;Benson;Vital Health Stat,1995
4. Ambulatory care visits for asthma: United States, 1993-1994;Burt,1996
5. National Center for Health Statistics. 1993 National Hospital Discharge Survey (public use data tape)