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Databases Searched and Number of Articles Identified
| Database | No. of Titles Identified Through Search Terms | No. of Abstracts Identified as Relevant on the Basis of the Review of Titles | No. of Articles Included in the Evidence Table |
|---|---|---|---|
| MEDLINE, ISI Web of Science, CCRCT, CDSR | 178 | 111 | 17 |
| ISI cross-reference search | 64 (identified through reference lists) | 16 | 8 |
| Total articles | 242 | 127 | 25 |
