LindgrenSBlakeBLarssonS. Clinical consequences of inadequate inhalation technique in asthma therapy. Eur J Respir Dis1987; 70: 93–8
3.
RachelefskiGSRohrASWoJGraveyVSpectorSLSiegelSC. Use of a tube spacer to improve the effect of a metered dose inhaler in asthmatic children. Am J Dis Child1986; 140: 1191–3
4.
GoddenDJCromptonGK. An objective assessment of the tube spacer in patients unable to use a conventional pressurized aerosol efficiently. Br J Dis Chest1981; 75: 165
5.
WongCAysonMRajasinghamSBurgessCCraneJ. Efficacy of a simple DIY spacer with a metered dose inhaler in asthma. NZ Med J1995; 108: 256–7