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Effects of postural drainage, exercise, and cough on mucus clearance in chronic bronchitis
Oldenburg FA Jr, Dolovich MB, Montgomery JM, Newhouse MT
The American Review of Respiratory Disease 1979 Oct;120(4):739-745
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; 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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