Systematic reviews: Work that needs to be done and not to be done

Abstract
Systematic reviews are researches requiring great attention to detail. They may well necessitate considerable investment of effort to ensure relevant data are identified, extracted, synthesized, written up and disseminated. These tasks have already been greatly refined and, in some cases, simplified, by machines. The last two decades have seen remarkable progress in machine-assisted production of reviews - the next two should see much more.