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3 “... (DerSimonian-Laird). CONCLUSIONS: Negative within-group correlation values are very uncommon in clinical...”

4 “... (DerSimonian-Laird). CONCLUSIONS: Negative within-group correlation values are very uncommon in clinical...”

5 “... effectiveness review (CER), the evidence base often includes single group studies, those that evaluate a single...”

6 “... effectiveness review (CER), the evidence base often includes single group studies, those that evaluate a single...”

7 “... studies for all topics, and larger single-group studies that addressed specific questions. RESULTS: We...”

8 “... studies for all topics, and larger single-group studies that addressed specific questions. RESULTS: We...”

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