Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| ISABELA | 3 studies | 25 studies |
| Idiopathic | 3 studies | 3,639 studies |
| Agnogenic | -- | 13 studies |
| Cryptogenic | -- | 132 studies |
| origin unknown | -- | 1 studies |
| unknown origin | -- | 152 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 |