An optimal search filter for retrieving systematic reviews and meta-analyses
BMC Medical Research Methodology (2012) - Comments
pubmed: 22512835  doi: 10.1186/1471-2288-12-51  issn: 1471-2288 

Edwin Lee, Maureen Dobbins, Kara Decorby, Lyndsey McRae, Daiva Tirilis, Heather Husson