| Study | Reason for exclusion |
|---|---|
| Allen 2008a | No control group |
| Campisi 1995 | No control group |
| Geremia 2001 | No control group |
| Gomez‐Perez 1994 | No control group |
| Khemlani‐Patel 2001 | No control group |
| Neziroglu 1993 | No control group |
| Neziroglu 1996 | No control group |
| Perugi 1996 | No control group |
| Phillips 1996 | No control group and augmentation study |
| Phillips 1998 | No control group |
| Phillips 2003 | No control group |
| Phillips 2005b | Augmentation trial. Included in an upcoming cochrane review of pharmacotherapy augmentation strategies in treatment‐resistant anxiety disorders |
| Phillips 2005c | Augmentation trial. |
| Phillips 2006e | No control group |
| Wilhelm 1999 | No control group |
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