EURURO Vol. 72 No. 2

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[(Fig._1)TD$FIG]
Fig. 1 – Flow diagram of assessing evidence following PRISMA guidelines. PRISMA = Preferred Reporting Items for Systematic Review and Meta-analysis.
a One article was added upon reviewer’s suggestion.
E U R O P E A N U R O L O G Y 7 2 ( 2 0 1 7 ) 2 0 5 – 2 1 7 207