?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=GJ&rft.au=Melendez-Torres%2C+GJ&rft.aulast=Melendez-Torres&rft.pages=1-7&rft.atitle=Systematic+review+and+meta-analysis+of+effects+of+community-delivered+positive+youth+development+interventions+on+violence+outcomes.&rft.title=J+Epidemiol+Community+Health&rft.date=21+July+2016&rft.issn=1470-2738&rft.genre=article