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2 “...These limitations include (a) the predominance of single trials conducted by the treatment...”

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4 “... were conducted in the United States (1 in Puerto Rico) and 1 in Scotland. All studies characterized...”

5 “... were conducted in the United States (1 in Puerto Rico) and 1 in Scotland. All studies characterized...”

6 “... of bias of relevant studies; they graded the strength of evidence using established criteria. We conducted...”

7 “... of bias of relevant studies; they graded the strength of evidence using established criteria. We conducted...”

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