4.6.4      Characteristics of studies awaiting classification

Details of studies for which insufficient information is available to include them or exclude them from the review should be reported in this table, using the same structure as the included studies table.  For example, translations may be awaited, or confirmation of details required from authors, which mean some studies cannot be included when the review is first published.  Studies which are discovered just before publication could also be listed here, but all attempts should be made to include all available literature in the review.