| http://www.w3.org/ns/prov#value | - These include the following: (1) the small number of studies and especially the small number of participants in the studies, (2) differences in the research methodologies and the types of comparisons that could be made as part of the meta-analysis, (3) the limited information in the original research reports in terms of the severity of child impairments and the fact that no studies of young childr
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