Spacers   and   holding   chambers:   Not the last word, we hope--a reply.
Zar
H J
HJ
Mann
M
M
Weinberg
E G
EG
D000280:Administration, Inhalation; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D016503:Drug Delivery Systems; D006801:Humans; D009330:Nebulizers and Vaporizers; D012107:Research Design; D016896:Treatment Outcome
D000336:Aerosols