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An assessment of the value of breathing exercises in chronic bronchitis and asthma
McNeill RS, McKenzie JM
Thorax 1955 Sep;10(3):250-252
clinical trial
1/10 [Eligibility criteria: No; 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: No; Point estimates and variability: No. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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Reproduced with permission from the BMJ Publishing Group.

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