FIG. 1.

Flow of studies. Of 1,200 citations identified with the initial search, 1,146 were excluded after review of the titles and abstracts. Two reviewers (A.C. and K.R.S.) then independently reviewed the full text of the remaining 54 citations as well as 13 additional citations identified from references or contacting experts and 32 papers included in the prior review. The full-text review yielded 11 papers that met the eligibility criteria. Because some papers reported more than one comparison, there were 14 unique comparisons of direct and bleach microscopy included in the analysis.