A case of rich fruit

摘要

We thank Mark Crowther and his colleagues for the comments that they have made on our paper While we welcome their opinions, it is worth noting that systematic reviews and meta-analyses are areas where opinions differ, controversy remains, and comments on published work are common.Their first point is that our search strategy was incomplete. They observe that a search using both text words and MeSH headings inclusive of conference abstracts results in an increased yield. It is unknown, however, if any of these studies would have been incorporated given our stringent inclusion criteria.