Abstract

Get full access to this article
View all access options for this article.
References
1.
Egan
DF
: Fundamentals of Inhalation Therapy , 1st ed . St Louis , CV Mosby , 1969 , p 258 .
2.
Bendixen
HH
,
Egbert
LD
,
Hedley-Whyte
J
,
Laver
MB
,
Pontoppidan
H
: Respiratory Care , 1st ed . St Louis , CV Mosby , 1965 , p133 .
