Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| 12 hours | 49 studies | 5,296 studies |
| hours | 109 studies | 62,006 studies |
| hrs | 7 studies | 2,385 studies |
| 24 hours | 105 studies | 22,170 studies |
| 24H | 13 studies | 4,023 studies |
| -- | No studies found |
| * | Number of studies in the search results containing the term or synonym |
| ** | Number of studies in the entire database containing the term or synonym |