1 “... studies were identified from reference lists and technical experts. REVIEW METHODS: Major data abstraction...”

2 “... studies were identified from reference lists and technical experts. REVIEW METHODS: Major data abstraction...”

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5 “..., and very small (<10 patients) studies. REVIEW METHODS: We abstracted data from the included studies...”

6 “... information, clinical trial registries, abstracts and conference papers, grants and federally funded research...”

7 “..., and very small (<10 patients) studies. REVIEW METHODS: We abstracted data from the included studies...”

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