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Acute effects of acu-TENS on FEV1 and blood beta-endorphin level in chronic obstructive pulmonary disease
Ngai SPC, Jones AYM, Hui-Chan CWY, Yu HPM, He CQ
Alternative Therapies in Health and Medicine 2011 Sep-Oct;17(5):8-13
clinical trial
9/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: Yes; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; 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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