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The efficacy of alternative spacer devices for delivery of aerosol therapy to children with asthma
Zar HJ, Liebenberg M, Weinberg EG, Binns HJ, Mann MD
Annals of Tropical Paediatrics 1998 Jun;18(2):75-79
clinical trial
3/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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