Search outcome. Figure 1
depicts the summary of the literature
search results and article inclu-sion and exclusion at each level. A
multi-step process was used to conduct
the review, proceeding from
titles to abstracts and then the full
articles. At each step, the citation
was reviewed and, if judged to not
meet inclusion criteria, the reasons
for exclusion were documented.
Web-based database software facilitated
access to studies and citation
management. Standardized abstract
forms included in the web-based
software were developed by the
team specifically for this project.