ReismanRE. Do air cleaners make a difference in treating allergic disease in homes?Ann Allergy Asthma Immunol2001;87(6 Suppl 3):41–43.
2.
BarryPW, O'CallaghanC.Inhalational drug delivery from seven different spacer devices. Thorax1996;51(8):835–840.
3.
LevershaAM, CampanellaSG, AickinRP, AsherMI. Costs and effectiveness of spacer versus nebulizer in young children with moderate and severe acute asthma. J Pediatr2000;136(4):497–502.