2Schuh S,Johnson DW,Callahan S,et al.Efficacy of frequent nebulized ipratropium bromide added to frequent high-dose albuterol therapy in severe childhood asthma[].The Journal of Pediatrics.1995
3Qureshi F,Zaritsky A,Lakkis H.Efficacy of Nebulized ipratropium in severely asthmatic children[].Annals of Emergency Medicine.1997
4Gross NJ.Ipratropium bromide[].The New England Journal of Medicine.1988
5Beck R,Robertson C,Michele GS,et al.Combined salbutamol and ipratropium bromide by inhalation in the treatment of severe acute asthma[].The Journal of Pediatrics.1985